diff --git a/apis/core.oam.dev/v1alpha2/zz_generated.deepcopy.go b/apis/core.oam.dev/v1alpha2/zz_generated.deepcopy.go
index b9f72e459..0d2dae272 100644
--- a/apis/core.oam.dev/v1alpha2/zz_generated.deepcopy.go
+++ b/apis/core.oam.dev/v1alpha2/zz_generated.deepcopy.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2020 The KubeVela Authors.
+Copyright 2021 The KubeVela Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/apis/standard.oam.dev/v1alpha1/zz_generated.deepcopy.go b/apis/standard.oam.dev/v1alpha1/zz_generated.deepcopy.go
index 112d71110..1d2981dfa 100644
--- a/apis/standard.oam.dev/v1alpha1/zz_generated.deepcopy.go
+++ b/apis/standard.oam.dev/v1alpha1/zz_generated.deepcopy.go
@@ -1,7 +1,7 @@
 // +build !ignore_autogenerated
 
 /*
-Copyright 2020 The KubeVela Authors.
+Copyright 2021 The KubeVela Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/cmd/core/main.go b/cmd/core/main.go
index 3ab1f0540..9a77665ea 100644
--- a/cmd/core/main.go
+++ b/cmd/core/main.go
@@ -33,7 +33,7 @@ import (
 
 	oamcore "github.com/oam-dev/kubevela/apis/core.oam.dev"
 	velacore "github.com/oam-dev/kubevela/apis/standard.oam.dev/v1alpha1"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/driver"
 	velacontroller "github.com/oam-dev/kubevela/pkg/controller"
 	oamcontroller "github.com/oam-dev/kubevela/pkg/controller/core.oam.dev"
 	oamv1alpha2 "github.com/oam-dev/kubevela/pkg/controller/core.oam.dev/v1alpha2"
diff --git a/hack/boilerplate.go.txt b/hack/boilerplate.go.txt
index 542360440..a674b7fe2 100644
--- a/hack/boilerplate.go.txt
+++ b/hack/boilerplate.go.txt
@@ -1,5 +1,5 @@
 /*
-Copyright 2020 The KubeVela Authors.
+Copyright 2021 The KubeVela Authors.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/pkg/appfile/appfile.go b/pkg/appfile/api/appfile.go
similarity index 99%
rename from pkg/appfile/appfile.go
rename to pkg/appfile/api/appfile.go
index 8651f412b..5c2a277d2 100644
--- a/pkg/appfile/appfile.go
+++ b/pkg/appfile/api/appfile.go
@@ -1,4 +1,4 @@
-package appfile
+package api
 
 import (
 	"encoding/json"
diff --git a/pkg/appfile/appfile_test.go b/pkg/appfile/api/appfile_test.go
similarity index 99%
rename from pkg/appfile/appfile_test.go
rename to pkg/appfile/api/appfile_test.go
index 3b56d7181..fcc4146d6 100644
--- a/pkg/appfile/appfile_test.go
+++ b/pkg/appfile/api/appfile_test.go
@@ -1,4 +1,4 @@
-package appfile
+package api
 
 import (
 	"os"
diff --git a/pkg/appfile/api/application.go b/pkg/appfile/api/application.go
new file mode 100644
index 000000000..746805583
--- /dev/null
+++ b/pkg/appfile/api/application.go
@@ -0,0 +1,27 @@
+/*
+Copyright 2020 The KubeVela Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package api
+
+import (
+	"github.com/oam-dev/kubevela/pkg/appfile/template"
+)
+
+// Application is an implementation level object for Appfile, all vela commands will access AppFile from Appliction struct here.
+type Application struct {
+	*AppFile `json:",inline"`
+	Tm       template.Manager
+}
diff --git a/pkg/appfile/api/driver.go b/pkg/appfile/api/driver.go
new file mode 100644
index 000000000..d2cf8c2e2
--- /dev/null
+++ b/pkg/appfile/api/driver.go
@@ -0,0 +1,15 @@
+package api
+
+// Driver is mutli implement interface
+type Driver interface {
+	// List applications
+	List(envName string) ([]*Application, error)
+	// Save application
+	Save(app *Application, envName string) error
+	// Delete application
+	Delete(envName, appName string) error
+	// Get application
+	Get(envName, appName string) (*Application, error)
+	// Name of storage driver
+	Name() string
+}
diff --git a/pkg/appfile/service.go b/pkg/appfile/api/service.go
similarity index 99%
rename from pkg/appfile/service.go
rename to pkg/appfile/api/service.go
index b9820ab6a..618367cda 100644
--- a/pkg/appfile/service.go
+++ b/pkg/appfile/api/service.go
@@ -1,4 +1,4 @@
-package appfile
+package api
 
 import (
 	"encoding/json"
diff --git a/pkg/appfile/service_test.go b/pkg/appfile/api/service_test.go
similarity index 95%
rename from pkg/appfile/service_test.go
rename to pkg/appfile/api/service_test.go
index 434b1db47..de53a737b 100644
--- a/pkg/appfile/service_test.go
+++ b/pkg/appfile/api/service_test.go
@@ -1,4 +1,4 @@
-package appfile
+package api
 
 import (
 	"testing"
diff --git a/pkg/application/app.go b/pkg/appfile/app.go
similarity index 60%
rename from pkg/application/app.go
rename to pkg/appfile/app.go
index ef14b0b70..2a5f0592f 100644
--- a/pkg/application/app.go
+++ b/pkg/appfile/app.go
@@ -1,7 +1,8 @@
-package application
+package appfile
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"reflect"
 	"sort"
@@ -10,18 +11,45 @@ import (
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/appfile/template"
 )
 
 // NewEmptyApplication new empty application, only set tm
-func NewEmptyApplication() (*driver.Application, error) {
+func NewEmptyApplication() (*api.Application, error) {
 	tm, err := template.Load()
 	if err != nil {
 		return nil, err
 	}
-	return driver.NewApplication(nil, tm), nil
+	return NewApplication(nil, tm), nil
+}
+
+// NewApplication will create application object
+func NewApplication(f *api.AppFile, tm template.Manager) *api.Application {
+	if f == nil {
+		f = api.NewAppFile()
+	}
+	return &api.Application{AppFile: f, Tm: tm}
+}
+
+// Validate will validate whether an Appfile is valid.
+func Validate(app *api.Application) error {
+	if app.Name == "" {
+		return errors.New("name is required")
+	}
+	if len(app.Services) == 0 {
+		return errors.New("at least one service is required")
+	}
+	for name, svc := range app.Services {
+		for traitName, traitData := range svc.GetApplicationConfig() {
+			if app.Tm.IsTrait(traitName) {
+				if _, ok := traitData.(map[string]interface{}); !ok {
+					return fmt.Errorf("trait %s in '%s' must be map", traitName, name)
+				}
+			}
+		}
+	}
+	return nil
 }
 
 // IsNotFound is application not found error
@@ -29,31 +57,31 @@ func IsNotFound(appName string, err error) bool {
 	return err != nil && err.Error() == fmt.Sprintf(`application "%s" not found`, appName)
 }
 
-// Load will load application with env and name from default vela home dir.
-func Load(envName, appName string) (*driver.Application, error) {
-	app, err := storage.GetStorage().Get(envName, appName)
+// LoadApplication will load application with env and name from default vela home dir.
+func LoadApplication(envName, appName string) (*api.Application, error) {
+	app, err := GetStorage().Get(envName, appName)
 	if err != nil {
 		return nil, err
 	}
-	err = app.Validate()
+	err = Validate(app)
 	return app, err
 }
 
 // Delete will delete an app along with it's appfile.
 func Delete(envName, appName string) error {
-	return storage.GetStorage().Delete(envName, appName)
+	return GetStorage().Delete(envName, appName)
 }
 
 // List will list all apps
-func List(envName string) ([]*driver.Application, error) {
-	respApps, err := storage.GetStorage().List(envName)
+func List(envName string) ([]*api.Application, error) {
+	respApps, err := GetStorage().List(envName)
 	if err != nil {
 		return nil, err
 	}
-	var apps []*driver.Application
+	var apps []*api.Application
 	for _, resp := range respApps {
-		app := driver.NewApplication(resp.AppFile, resp.Tm)
-		err := app.Validate()
+		app := NewApplication(resp.AppFile, resp.Tm)
+		err := Validate(app)
 		if err != nil {
 			return nil, err
 		}
@@ -63,7 +91,7 @@ func List(envName string) ([]*driver.Application, error) {
 }
 
 // MatchAppByComp will get application with componentName without AppName.
-func MatchAppByComp(envName, compName string) (*driver.Application, error) {
+func MatchAppByComp(envName, compName string) (*api.Application, error) {
 	apps, err := List(envName)
 	if err != nil {
 		return nil, err
@@ -79,12 +107,12 @@ func MatchAppByComp(envName, compName string) (*driver.Application, error) {
 }
 
 // Save will save appfile into default dir.
-func Save(app *driver.Application, envName string) error {
-	return storage.GetStorage().Save(app, envName)
+func Save(app *api.Application, envName string) error {
+	return GetStorage().Save(app, envName)
 }
 
 // GetComponents will get oam components from Appfile.
-func GetComponents(app *driver.Application) []string {
+func GetComponents(app *api.Application) []string {
 	var components []string
 	for name := range app.Services {
 		components = append(components, name)
@@ -94,7 +122,7 @@ func GetComponents(app *driver.Application) []string {
 }
 
 // GetServiceConfig will get service type and it's configuration
-func GetServiceConfig(app *driver.Application, componentName string) (string, map[string]interface{}) {
+func GetServiceConfig(app *api.Application, componentName string) (string, map[string]interface{}) {
 	svc, ok := app.Services[componentName]
 	if !ok {
 		return "", make(map[string]interface{})
@@ -103,7 +131,7 @@ func GetServiceConfig(app *driver.Application, componentName string) (string, ma
 }
 
 // GetWorkload will get workload type and it's configuration
-func GetWorkload(app *driver.Application, componentName string) (string, map[string]interface{}) {
+func GetWorkload(app *api.Application, componentName string) (string, map[string]interface{}) {
 	svcType, config := GetServiceConfig(app, componentName)
 	if svcType == "" {
 		return "", make(map[string]interface{})
@@ -119,7 +147,7 @@ func GetWorkload(app *driver.Application, componentName string) (string, map[str
 }
 
 // GetTraits will list all traits and it's configurations attached to the specified component.
-func GetTraits(app *driver.Application, componentName string) (map[string]map[string]interface{}, error) {
+func GetTraits(app *api.Application, componentName string) (map[string]map[string]interface{}, error) {
 	_, config := GetServiceConfig(app, componentName)
 	traitsData := make(map[string]map[string]interface{})
 	for k, v := range config {
@@ -136,7 +164,7 @@ func GetTraits(app *driver.Application, componentName string) (map[string]map[st
 }
 
 // GetTraitsByType will get trait configuration with specified component and trait type, we assume one type of trait can only attach to a component once.
-func GetTraitsByType(app *driver.Application, componentName, traitType string) (map[string]interface{}, error) {
+func GetTraitsByType(app *api.Application, componentName, traitType string) (map[string]interface{}, error) {
 	service, ok := app.Services[componentName]
 	if !ok {
 		return nil, fmt.Errorf("service name (%s) doesn't exist", componentName)
@@ -149,7 +177,7 @@ func GetTraitsByType(app *driver.Application, componentName, traitType string) (
 }
 
 // GetAppConfig will get AppConfig from K8s cluster.
-func GetAppConfig(ctx context.Context, c client.Client, app *driver.Application, env *types.EnvMeta) (*v1alpha2.ApplicationConfiguration, error) {
+func GetAppConfig(ctx context.Context, c client.Client, app *api.Application, env *types.EnvMeta) (*v1alpha2.ApplicationConfiguration, error) {
 	appConfig := &v1alpha2.ApplicationConfiguration{}
 	if err := c.Get(ctx, client.ObjectKey{Namespace: env.Namespace, Name: app.Name}, appConfig); err != nil {
 		return nil, err
@@ -158,7 +186,7 @@ func GetAppConfig(ctx context.Context, c client.Client, app *driver.Application,
 }
 
 // GetApplication will get Application from K8s cluster.
-func GetApplication(ctx context.Context, c client.Client, app *driver.Application, env *types.EnvMeta) (*v1alpha2.Application, error) {
+func GetApplication(ctx context.Context, c client.Client, app *api.Application, env *types.EnvMeta) (*v1alpha2.Application, error) {
 	appl := &v1alpha2.Application{}
 	if err := c.Get(ctx, client.ObjectKey{Namespace: env.Namespace, Name: app.Name}, appl); err != nil {
 		return nil, err
diff --git a/pkg/application/app_test.go b/pkg/appfile/app_test.go
similarity index 95%
rename from pkg/application/app_test.go
rename to pkg/appfile/app_test.go
index 3ab4d1d79..fdca6424a 100644
--- a/pkg/application/app_test.go
+++ b/pkg/appfile/app_test.go
@@ -1,4 +1,4 @@
-package application
+package appfile
 
 import (
 	"errors"
@@ -10,7 +10,6 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
 	"github.com/oam-dev/kubevela/pkg/appfile/template"
 )
 
@@ -120,10 +119,10 @@ services:
 				Captype: types.TypeTrait,
 			}
 		}
-		app := driver.NewApplication(nil, tm)
+		app := NewApplication(nil, tm)
 		err := yaml.Unmarshal([]byte(c.raw), &app)
 		assert.NoError(t, err, caseName)
-		err = app.Validate()
+		err = Validate(app)
 		if c.InValid {
 			assert.Equal(t, c.InvalidReason, err)
 			continue
@@ -145,7 +144,7 @@ func TestLoadNotExistsApplication(t *testing.T) {
 	now := time.Now().Unix()
 	appName := fmt.Sprintf("test-app-%d", now)
 
-	app, err := Load(types.DefaultEnvName, appName)
+	app, err := LoadApplication(types.DefaultEnvName, appName)
 
 	assert.Nil(t, app, caseName)
 	assert.Error(t, err, caseName)
diff --git a/pkg/appfile/storage/driver/cfgmaps.go b/pkg/appfile/driver/cfgmaps.go
similarity index 77%
rename from pkg/appfile/storage/driver/cfgmaps.go
rename to pkg/appfile/driver/cfgmaps.go
index b29307293..a9ca0e7bd 100644
--- a/pkg/appfile/storage/driver/cfgmaps.go
+++ b/pkg/appfile/driver/cfgmaps.go
@@ -2,6 +2,8 @@ package driver
 
 import (
 	"errors"
+
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 )
 
 // ConfigMapDriverName is local storage driver name
@@ -9,7 +11,7 @@ const ConfigMapDriverName = "ConfigMap"
 
 // ConfigMap Storage
 type ConfigMap struct {
-	Driver
+	api.Driver
 }
 
 // NewConfigMapStorage get storage client of ConfigMap type
@@ -23,13 +25,13 @@ func (c *ConfigMap) Name() string {
 }
 
 // List applications from configmap storage
-func (c *ConfigMap) List(envName string) ([]*Application, error) {
+func (c *ConfigMap) List(envName string) ([]*api.Application, error) {
 	// TODO support configmap storage
 	return nil, errors.New("not implement")
 }
 
 // Save applications from configmap storage
-func (c *ConfigMap) Save(app *Application, envName string) error {
+func (c *ConfigMap) Save(app *api.Application, envName string) error {
 	// TODO support configmap storage
 	return errors.New("not implement")
 }
@@ -41,7 +43,7 @@ func (c *ConfigMap) Delete(envName, appName string) error {
 }
 
 // Get applications from configmap storage
-func (c *ConfigMap) Get(envName, appName string) (*Application, error) {
+func (c *ConfigMap) Get(envName, appName string) (*api.Application, error) {
 	// TODO support configmap storage
 	return nil, errors.New("not implement")
 }
diff --git a/pkg/appfile/storage/driver/cfgmaps_test.go b/pkg/appfile/driver/cfgmaps_test.go
similarity index 94%
rename from pkg/appfile/storage/driver/cfgmaps_test.go
rename to pkg/appfile/driver/cfgmaps_test.go
index fe9b3ded2..0dae81531 100644
--- a/pkg/appfile/storage/driver/cfgmaps_test.go
+++ b/pkg/appfile/driver/cfgmaps_test.go
@@ -3,6 +3,8 @@ package driver
 import (
 	"reflect"
 	"testing"
+
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 )
 
 func TestConfigMap_Delete(t *testing.T) {
@@ -35,7 +37,7 @@ func TestConfigMap_Get(t *testing.T) {
 	tests := []struct {
 		name    string
 		args    args
-		want    *Application
+		want    *api.Application
 		wantErr bool
 	}{
 		// TODO: Add test cases.
@@ -62,7 +64,7 @@ func TestConfigMap_List(t *testing.T) {
 	tests := []struct {
 		name    string
 		args    args
-		want    []*Application
+		want    []*api.Application
 		wantErr bool
 	}{
 		// TODO: Add test cases.
@@ -101,7 +103,7 @@ func TestConfigMap_Name(t *testing.T) {
 
 func TestConfigMap_Save(t *testing.T) {
 	type args struct {
-		app     *Application
+		app     *api.Application
 		envName string
 	}
 	tests := []struct {
diff --git a/pkg/appfile/storage/driver/local.go b/pkg/appfile/driver/local.go
similarity index 85%
rename from pkg/appfile/storage/driver/local.go
rename to pkg/appfile/driver/local.go
index 2350cc795..b4a81f726 100644
--- a/pkg/appfile/storage/driver/local.go
+++ b/pkg/appfile/driver/local.go
@@ -10,7 +10,7 @@ import (
 
 	"github.com/ghodss/yaml"
 
-	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/appfile/template"
 	"github.com/oam-dev/kubevela/pkg/utils/env"
 	"github.com/oam-dev/kubevela/pkg/utils/system"
@@ -21,7 +21,7 @@ const LocalDriverName = "Local"
 
 // Local Storage
 type Local struct {
-	Driver
+	api.Driver
 }
 
 // NewLocalStorage get storage client of Local type
@@ -35,7 +35,7 @@ func (l *Local) Name() string {
 }
 
 // List applications from local storage
-func (l *Local) List(envName string) ([]*Application, error) {
+func (l *Local) List(envName string) ([]*api.Application, error) {
 	appDir, err := getApplicationDir(envName)
 	if err != nil {
 		return nil, err
@@ -44,7 +44,7 @@ func (l *Local) List(envName string) ([]*Application, error) {
 	if err != nil {
 		return nil, fmt.Errorf("list apps from %s err %w", appDir, err)
 	}
-	var apps []*Application
+	var apps []*api.Application
 	for _, f := range files {
 		if f.IsDir() {
 			continue
@@ -62,7 +62,7 @@ func (l *Local) List(envName string) ([]*Application, error) {
 }
 
 // Save application from local storage
-func (l *Local) Save(app *Application, envName string) error {
+func (l *Local) Save(app *api.Application, envName string) error {
 	appDir, err := getApplicationDir(envName)
 	if err != nil {
 		return err
@@ -89,7 +89,7 @@ func (l *Local) Delete(envName, appName string) error {
 }
 
 // Get application from local storage
-func (l *Local) Get(envName, appName string) (*Application, error) {
+func (l *Local) Get(envName, appName string) (*api.Application, error) {
 	appDir, err := getApplicationDir(envName)
 	if err != nil {
 		return nil, err
@@ -116,7 +116,7 @@ func getApplicationDir(envName string) (string, error) {
 }
 
 // LoadFromFile will load application from file
-func loadFromFile(fileName string) (*Application, error) {
+func loadFromFile(fileName string) (*api.Application, error) {
 	tm, err := template.Load()
 	if err != nil {
 		return nil, err
@@ -126,10 +126,10 @@ func loadFromFile(fileName string) (*Application, error) {
 		return nil, err
 	}
 
-	f, err := appfile.LoadFromFile(fileName)
+	f, err := api.LoadFromFile(fileName)
 	if err != nil {
 		return nil, err
 	}
-	app := &Application{AppFile: f, Tm: tm}
+	app := &api.Application{AppFile: f, Tm: tm}
 	return app, nil
 }
diff --git a/pkg/appfile/storage/driver/local_test.go b/pkg/appfile/driver/local_test.go
similarity index 89%
rename from pkg/appfile/storage/driver/local_test.go
rename to pkg/appfile/driver/local_test.go
index e9e1e4cab..3d509961e 100644
--- a/pkg/appfile/storage/driver/local_test.go
+++ b/pkg/appfile/driver/local_test.go
@@ -9,22 +9,22 @@ import (
 
 	"github.com/ghodss/yaml"
 
-	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/appfile/template"
 )
 
 var dir string
 var tm template.Manager
-var afile *appfile.AppFile
+var afile *api.AppFile
 var appName = "testsvc"
 var envName = "default"
 
 func init() {
 	dir, _ = getApplicationDir(envName)
 	tm, _ = template.Load()
-	afile = appfile.NewAppFile()
+	afile = api.NewAppFile()
 	afile.Name = appName
-	svcs := make(map[string]appfile.Service, 0)
+	svcs := make(map[string]api.Service, 0)
 	svcs["wordpress"] = map[string]interface{}{
 		"type":  "webservice",
 		"image": "wordpress:php7.4-apache",
@@ -45,10 +45,10 @@ func TestLocal_Get(t *testing.T) {
 	tests := []struct {
 		name    string
 		args    args
-		want    *Application
+		want    *api.Application
 		wantErr bool
 	}{
-		{"TestLocal_Get1", args{envName: envName, appName: appName}, &Application{AppFile: afile, Tm: tm}, false},
+		{"TestLocal_Get1", args{envName: envName, appName: appName}, &api.Application{AppFile: afile, Tm: tm}, false},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -90,7 +90,7 @@ func TestLocal_Delete(t *testing.T) {
 
 func TestLocal_Save(t *testing.T) {
 	type args struct {
-		app     *Application
+		app     *api.Application
 		envName string
 	}
 	tests := []struct {
@@ -98,7 +98,7 @@ func TestLocal_Save(t *testing.T) {
 		args    args
 		wantErr bool
 	}{
-		{"TestLocal_Save1", args{&Application{AppFile: afile, Tm: nil}, envName}, false},
+		{"TestLocal_Save1", args{&api.Application{AppFile: afile, Tm: nil}, envName}, false},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
@@ -114,12 +114,12 @@ func TestLocal_List(t *testing.T) {
 	type args struct {
 		envName string
 	}
-	want := make([]*Application, 0)
-	want = append(want, &Application{afile, tm})
+	want := make([]*api.Application, 0)
+	want = append(want, &api.Application{AppFile: afile, Tm: tm})
 	tests := []struct {
 		name    string
 		args    args
-		want    []*Application
+		want    []*api.Application
 		wantErr bool
 	}{
 		{"TestLocal_List1", args{envName}, want, false},
@@ -205,10 +205,10 @@ func Test_loadFromFile(t *testing.T) {
 	tests := []struct {
 		name    string
 		args    args
-		want    *Application
+		want    *api.Application
 		wantErr bool
 	}{
-		{"testRespApp", args{fileName: filepath.Join(dir, appName+".yaml")}, &Application{AppFile: afile, Tm: tm}, false},
+		{"testRespApp", args{fileName: filepath.Join(dir, appName+".yaml")}, &api.Application{AppFile: afile, Tm: tm}, false},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
diff --git a/pkg/application/modify.go b/pkg/appfile/modify.go
similarity index 64%
rename from pkg/application/modify.go
rename to pkg/appfile/modify.go
index 16ec841a7..f21bb33bc 100644
--- a/pkg/application/modify.go
+++ b/pkg/appfile/modify.go
@@ -1,32 +1,31 @@
-package application
+package appfile
 
 import (
 	"errors"
 
-	"github.com/oam-dev/kubevela/pkg/appfile"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 )
 
 // SetWorkload will set user workload for Appfile
-func SetWorkload(app *driver.Application, componentName, workloadType string, workloadData map[string]interface{}) error {
+func SetWorkload(app *api.Application, componentName, workloadType string, workloadData map[string]interface{}) error {
 	if app == nil {
 		return errors.New("app is nil pointer")
 	}
 
 	s, ok := app.Services[componentName]
 	if !ok {
-		s = appfile.Service{}
+		s = api.Service{}
 	}
 	s["type"] = workloadType
 	for k, v := range workloadData {
 		s[k] = v
 	}
 	app.Services[componentName] = s
-	return app.Validate()
+	return Validate(app)
 }
 
 // SetTrait will set user trait for Appfile
-func SetTrait(app *driver.Application, componentName, traitType string, traitData map[string]interface{}) error {
+func SetTrait(app *api.Application, componentName, traitType string, traitData map[string]interface{}) error {
 	if app == nil {
 		return errors.New("app is nil pointer")
 	}
@@ -36,7 +35,7 @@ func SetTrait(app *driver.Application, componentName, traitType string, traitDat
 
 	s, ok := app.Services[componentName]
 	if !ok {
-		s = appfile.Service{}
+		s = api.Service{}
 	}
 
 	t, ok := s[traitType]
@@ -49,11 +48,11 @@ func SetTrait(app *driver.Application, componentName, traitType string, traitDat
 	}
 	s[traitType] = t
 	app.Services[componentName] = s
-	return app.Validate()
+	return Validate(app)
 }
 
 // RemoveTrait will remove a trait from Appfile
-func RemoveTrait(app *driver.Application, componentName, traitType string) error {
+func RemoveTrait(app *api.Application, componentName, traitType string) error {
 	if app == nil {
 		return errors.New("app is nil pointer")
 	}
@@ -67,7 +66,7 @@ func RemoveTrait(app *driver.Application, componentName, traitType string) error
 }
 
 // RemoveComponent will remove component from Appfile
-func RemoveComponent(app *driver.Application, componentName string) error {
+func RemoveComponent(app *api.Application, componentName string) error {
 	if app == nil {
 		return errors.New("app is nil pointer")
 	}
diff --git a/pkg/application/run.go b/pkg/appfile/run.go
similarity index 91%
rename from pkg/application/run.go
rename to pkg/appfile/run.go
index 072b8a26e..d478afd0b 100644
--- a/pkg/application/run.go
+++ b/pkg/appfile/run.go
@@ -1,23 +1,22 @@
-package application
+package appfile
 
 import (
 	"context"
 
-	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
-
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	ctypes "k8s.io/apimachinery/pkg/types"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/oam"
 )
 
 // BuildRun will build application and deploy from Appfile
-func BuildRun(ctx context.Context, app *driver.Application, client client.Client, env *types.EnvMeta, io cmdutil.IOStreams) error {
+func BuildRun(ctx context.Context, app *api.Application, client client.Client, env *types.EnvMeta, io cmdutil.IOStreams) error {
 	o, scopes, err := app.BuildOAMApplication(env, io, app.Tm, true)
 	if err != nil {
 		return err
diff --git a/pkg/appfile/storage/storage.go b/pkg/appfile/storage.go
similarity index 77%
rename from pkg/appfile/storage/storage.go
rename to pkg/appfile/storage.go
index c8f17820c..a75a83306 100644
--- a/pkg/appfile/storage/storage.go
+++ b/pkg/appfile/storage.go
@@ -1,9 +1,10 @@
-package storage
+package appfile
 
 import (
 	"os"
 
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
+	"github.com/oam-dev/kubevela/pkg/appfile/driver"
 	"github.com/oam-dev/kubevela/pkg/utils/system"
 )
 
@@ -12,7 +13,7 @@ var store *Storage
 
 // Storage is common storage client，use it to get app and others resource
 type Storage struct {
-	driver.Driver
+	api.Driver
 }
 
 // GetStorage will create storage driver from the system environment of "STORAGE_DRIVER"
@@ -33,12 +34,12 @@ func GetStorage() *Storage {
 }
 
 // List applications storage common implement
-func (s *Storage) List(envName string) ([]*driver.Application, error) {
+func (s *Storage) List(envName string) ([]*api.Application, error) {
 	return s.Driver.List(envName)
 }
 
 // Save application storage common implement
-func (s *Storage) Save(app *driver.Application, envName string) error {
+func (s *Storage) Save(app *api.Application, envName string) error {
 	return s.Driver.Save(app, envName)
 }
 
@@ -48,6 +49,6 @@ func (s *Storage) Delete(envName, appName string) error {
 }
 
 // Get application storage common implement
-func (s *Storage) Get(envName, appName string) (*driver.Application, error) {
+func (s *Storage) Get(envName, appName string) (*api.Application, error) {
 	return s.Driver.Get(envName, appName)
 }
diff --git a/pkg/appfile/storage/driver/driver.go b/pkg/appfile/storage/driver/driver.go
deleted file mode 100644
index 93a99f13c..000000000
--- a/pkg/appfile/storage/driver/driver.go
+++ /dev/null
@@ -1,57 +0,0 @@
-package driver
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/oam-dev/kubevela/pkg/appfile"
-	"github.com/oam-dev/kubevela/pkg/appfile/template"
-)
-
-// Application is an implementation level object for Appfile, all vela commands will access AppFile from Appliction struct here.
-type Application struct {
-	*appfile.AppFile `json:",inline"`
-	Tm               template.Manager
-}
-
-// NewApplication will create application object
-func NewApplication(f *appfile.AppFile, tm template.Manager) *Application {
-	if f == nil {
-		f = appfile.NewAppFile()
-	}
-	return &Application{AppFile: f, Tm: tm}
-}
-
-// Validate will validate whether an Appfile is valid.
-func (app *Application) Validate() error {
-	if app.Name == "" {
-		return errors.New("name is required")
-	}
-	if len(app.Services) == 0 {
-		return errors.New("at least one service is required")
-	}
-	for name, svc := range app.Services {
-		for traitName, traitData := range svc.GetApplicationConfig() {
-			if app.Tm.IsTrait(traitName) {
-				if _, ok := traitData.(map[string]interface{}); !ok {
-					return fmt.Errorf("trait %s in '%s' must be map", traitName, name)
-				}
-			}
-		}
-	}
-	return nil
-}
-
-// Driver is mutli implement interface
-type Driver interface {
-	// List applications
-	List(envName string) ([]*Application, error)
-	// Save application
-	Save(app *Application, envName string) error
-	// Delete application
-	Delete(envName, appName string) error
-	// Get application
-	Get(envName, appName string) (*Application, error)
-	// Name of storage driver
-	Name() string
-}
diff --git a/pkg/appfile/storage/storage_test.go b/pkg/appfile/storage_test.go
similarity index 87%
rename from pkg/appfile/storage/storage_test.go
rename to pkg/appfile/storage_test.go
index c1da4365c..ce936d35b 100644
--- a/pkg/appfile/storage/storage_test.go
+++ b/pkg/appfile/storage_test.go
@@ -1,10 +1,10 @@
-package storage
+package appfile
 
 import (
 	"os"
 	"testing"
 
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/driver"
 	"github.com/oam-dev/kubevela/pkg/utils/system"
 )
 
diff --git a/pkg/commands/exec.go b/pkg/commands/exec.go
index ad6211ec2..ae03a2970 100644
--- a/pkg/commands/exec.go
+++ b/pkg/commands/exec.go
@@ -15,8 +15,8 @@ import (
 	k8scmdutil "k8s.io/kubectl/pkg/cmd/util"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/commands/util"
 	velacmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/oam"
@@ -40,7 +40,7 @@ type VelaExecOptions struct {
 	context.Context
 	VelaC types.Args
 	Env   *types.EnvMeta
-	App   *driver.Application
+	App   *api.Application
 
 	f             k8scmdutil.Factory
 	kcExecOptions *cmdexec.ExecOptions
@@ -118,7 +118,7 @@ func (o *VelaExecOptions) Init(ctx context.Context, c *cobra.Command, argsIn []s
 		return err
 	}
 	o.Env = env
-	app, err := application.Load(env.Name, o.Args[0])
+	app, err := appfile.LoadApplication(env.Name, o.Args[0])
 	if err != nil {
 		return err
 	}
@@ -169,7 +169,7 @@ func (o *VelaExecOptions) getComponentName() (string, error) {
 		o.Cmd.Printf("The service name '%s' is not valid\n", svcName)
 	}
 
-	compName, err := util.AskToChooseOneService(application.GetComponents(o.App))
+	compName, err := util.AskToChooseOneService(appfile.GetComponents(o.App))
 	if err != nil {
 		return "", err
 	}
diff --git a/pkg/commands/exec_test.go b/pkg/commands/exec_test.go
index d86975d8b..1f3a52d4c 100644
--- a/pkg/commands/exec_test.go
+++ b/pkg/commands/exec_test.go
@@ -6,6 +6,8 @@ import (
 	"os"
 	"testing"
 
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
+
 	"github.com/spf13/cobra"
 	"github.com/stretchr/testify/assert"
 	corev1 "k8s.io/api/core/v1"
@@ -17,8 +19,6 @@ import (
 	k8scmdutil "k8s.io/kubectl/pkg/cmd/util"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/oam"
 )
@@ -52,10 +52,10 @@ func TestExecCommand(t *testing.T) {
 	err := o.Init(context.Background(), cmd, []string{"fakeApp"})
 	errString := fmt.Sprintf(`application "%s" not found`, "fakeApp")
 	assert.EqualError(t, err, errString)
-	fakeApp := &driver.Application{
-		AppFile: &appfile.AppFile{
+	fakeApp := &api.Application{
+		AppFile: &api.AppFile{
 			Name: "fakeApp",
-			Services: map[string]appfile.Service{
+			Services: map[string]api.Service{
 				"fakeComp": map[string]interface{}{},
 			},
 		},
@@ -78,10 +78,10 @@ func TestExecCommandPersistentPreRunE(t *testing.T) {
 
 func TestGetComponent(t *testing.T) {
 	o := &VelaExecOptions{
-		App: &driver.Application{
-			AppFile: &appfile.AppFile{
+		App: &api.Application{
+			AppFile: &api.AppFile{
 				Name: "fakeApp",
-				Services: map[string]appfile.Service{
+				Services: map[string]api.Service{
 					"fakeComp1": map[string]interface{}{},
 					"fakeComp2": map[string]interface{}{},
 				},
diff --git a/pkg/commands/init.go b/pkg/commands/init.go
index 7dfea0181..b0dff468d 100644
--- a/pkg/commands/init.go
+++ b/pkg/commands/init.go
@@ -16,8 +16,8 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/plugins"
 	"github.com/oam-dev/kubevela/pkg/serverlib"
@@ -29,7 +29,7 @@ type appInitOptions struct {
 	cmdutil.IOStreams
 	Env *types.EnvMeta
 
-	app          *driver.Application
+	app          *api.Application
 	appName      string
 	workloadName string
 	workloadType string
@@ -73,7 +73,7 @@ func NewInitCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Command {
 				return err
 			}
 
-			if err := o.app.Validate(); err != nil {
+			if err := appfile.Validate(o.app); err != nil {
 				return err
 			}
 
@@ -92,7 +92,7 @@ func NewInitCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Command {
 			}
 
 			ctx := context.Background()
-			err = application.BuildRun(ctx, o.app, o.client, o.Env, o.IOStreams)
+			err = appfile.BuildRun(ctx, o.app, o.client, o.Env, o.IOStreams)
 			if err != nil {
 				return err
 			}
diff --git a/pkg/commands/logs.go b/pkg/commands/logs.go
index e94a766a1..b7845f001 100644
--- a/pkg/commands/logs.go
+++ b/pkg/commands/logs.go
@@ -16,8 +16,8 @@ import (
 	"k8s.io/client-go/kubernetes"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/commands/util"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 )
@@ -45,7 +45,7 @@ func NewLogsCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Command {
 		if err != nil {
 			return err
 		}
-		app, err := application.Load(env.Name, args[0])
+		app, err := appfile.LoadApplication(env.Name, args[0])
 		if err != nil {
 			return err
 		}
@@ -69,7 +69,7 @@ type Args struct {
 	Output string
 	Env    *types.EnvMeta
 	C      types.Args
-	App    *driver.Application
+	App    *api.Application
 }
 
 // Run refer to the implementation at https://github.com/oam-dev/stern/blob/master/stern/main.go
@@ -79,7 +79,7 @@ func (l *Args) Run(ctx context.Context, ioStreams cmdutil.IOStreams) error {
 	if err != nil {
 		return err
 	}
-	compName, err := util.AskToChooseOneService(application.GetComponents(l.App))
+	compName, err := util.AskToChooseOneService(appfile.GetComponents(l.App))
 	if err != nil {
 		return err
 	}
diff --git a/pkg/commands/ls.go b/pkg/commands/ls.go
index 1c5e51292..4d0919ff0 100644
--- a/pkg/commands/ls.go
+++ b/pkg/commands/ls.go
@@ -9,7 +9,7 @@ import (
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/server/apis"
 	"github.com/oam-dev/kubevela/pkg/serverlib"
@@ -78,7 +78,7 @@ func printComponentList(ctx context.Context, c client.Client, appName string, en
 }
 
 func mergeStagingComponents(deployed []apis.ComponentMeta, env *types.EnvMeta, ioStreams cmdutil.IOStreams, fetcher func(name string) (*v1alpha2.Application, error)) []apis.ComponentMeta {
-	localApps, err := application.List(env.Name)
+	localApps, err := appfile.List(env.Name)
 	if err != nil {
 		ioStreams.Error("list application err", err)
 		return deployed
diff --git a/pkg/commands/portforward.go b/pkg/commands/portforward.go
index eb55d4eb7..14d3608df 100644
--- a/pkg/commands/portforward.go
+++ b/pkg/commands/portforward.go
@@ -24,8 +24,8 @@ import (
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/commands/util"
 	velacmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/oam"
@@ -40,7 +40,7 @@ type VelaPortForwardOptions struct {
 	context.Context
 	VelaC types.Args
 	Env   *types.EnvMeta
-	App   *driver.Application
+	App   *api.Application
 
 	f                    k8scmdutil.Factory
 	kcPortForwardOptions *cmdpf.PortForwardOptions
@@ -114,7 +114,7 @@ func (o *VelaPortForwardOptions) Init(ctx context.Context, cmd *cobra.Command, a
 	}
 	o.Env = env
 
-	app, err := application.Load(env.Name, o.Args[0])
+	app, err := appfile.LoadApplication(env.Name, o.Args[0])
 	if err != nil {
 		return err
 	}
@@ -151,12 +151,12 @@ func getRouteServiceName(appconfig *v1alpha2.ApplicationConfiguration, svcName s
 
 // Complete will complete the config of port-forward
 func (o *VelaPortForwardOptions) Complete() error {
-	svcName, err := util.AskToChooseOneService(application.GetComponents(o.App))
+	svcName, err := util.AskToChooseOneService(appfile.GetComponents(o.App))
 	if err != nil {
 		return err
 	}
 	if o.routeTrait {
-		appconfig, err := application.GetAppConfig(o.Context, o.Client, o.App, o.Env)
+		appconfig, err := appfile.GetAppConfig(o.Context, o.Client, o.App, o.Env)
 		if err != nil {
 			return err
 		}
@@ -191,7 +191,7 @@ func (o *VelaPortForwardOptions) Complete() error {
 	}
 	if len(o.Args) < 2 {
 		var found bool
-		_, configs := application.GetServiceConfig(o.App, svcName)
+		_, configs := appfile.GetServiceConfig(o.App, svcName)
 		for k, v := range configs {
 			if k == "port" {
 				var val string
diff --git a/pkg/commands/status.go b/pkg/commands/status.go
index b32ff3fe3..a46e26302 100644
--- a/pkg/commands/status.go
+++ b/pkg/commands/status.go
@@ -16,8 +16,8 @@ import (
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/oam"
 	oam2 "github.com/oam-dev/kubevela/pkg/serverlib"
@@ -115,7 +115,7 @@ func NewAppStatusCommand(c types.Args, ioStreams cmdutil.IOStreams) *cobra.Comma
 }
 
 func printAppStatus(ctx context.Context, c client.Client, ioStreams cmdutil.IOStreams, appName string, env *types.EnvMeta, cmd *cobra.Command) error {
-	app, err := application.Load(env.Name, appName)
+	app, err := appfile.LoadApplication(env.Name, appName)
 	if err != nil {
 		return err
 	}
@@ -189,7 +189,7 @@ func printComponentStatus(ctx context.Context, c client.Client, ioStreams cmduti
 	return nil
 }
 
-func traitCheckLoop(ctx context.Context, c client.Client, reference runtimev1alpha1.TypedReference, compName string, appConfig *v1alpha2.ApplicationConfiguration, app *driver.Application, timeout time.Duration) (string, string, error) {
+func traitCheckLoop(ctx context.Context, c client.Client, reference runtimev1alpha1.TypedReference, compName string, appConfig *v1alpha2.ApplicationConfiguration, app *api.Application, timeout time.Duration) (string, string, error) {
 	tr, err := oam2.GetUnstructured(ctx, c, appConfig.Namespace, reference)
 	if err != nil {
 		return "", "", err
@@ -375,38 +375,38 @@ func trackHealthCheckingStatus(ctx context.Context, c client.Client, compName, a
 	return compStatusHealthCheckDone, HealthStatusNotDiagnosed, statusInfo, nil
 }
 
-func getAppConfig(ctx context.Context, c client.Client, compName, appName string, env *types.EnvMeta) (*driver.Application, *v1alpha2.ApplicationConfiguration, error) {
-	var app *driver.Application
+func getAppConfig(ctx context.Context, c client.Client, compName, appName string, env *types.EnvMeta) (*api.Application, *v1alpha2.ApplicationConfiguration, error) {
+	var app *api.Application
 	var err error
 	if appName != "" {
-		app, err = application.Load(env.Name, appName)
+		app, err = appfile.LoadApplication(env.Name, appName)
 	} else {
-		app, err = application.MatchAppByComp(env.Name, compName)
+		app, err = appfile.MatchAppByComp(env.Name, compName)
 	}
 	if err != nil {
 		return nil, nil, err
 	}
 
-	appConfig, err := application.GetAppConfig(ctx, c, app, env)
+	appConfig, err := appfile.GetAppConfig(ctx, c, app, env)
 	if err != nil {
 		return nil, nil, err
 	}
 	return app, appConfig, nil
 }
 
-func getApp(ctx context.Context, c client.Client, compName, appName string, env *types.EnvMeta) (*driver.Application, *v1alpha2.Application, error) {
-	var app *driver.Application
+func getApp(ctx context.Context, c client.Client, compName, appName string, env *types.EnvMeta) (*api.Application, *v1alpha2.Application, error) {
+	var app *api.Application
 	var err error
 	if appName != "" {
-		app, err = application.Load(env.Name, appName)
+		app, err = appfile.LoadApplication(env.Name, appName)
 	} else {
-		app, err = application.MatchAppByComp(env.Name, compName)
+		app, err = appfile.MatchAppByComp(env.Name, compName)
 	}
 	if err != nil {
 		return nil, nil, err
 	}
 
-	appObj, err := application.GetApplication(ctx, c, app, env)
+	appObj, err := appfile.GetApplication(ctx, c, app, env)
 	if err != nil {
 		return nil, nil, err
 	}
diff --git a/pkg/commands/trait.go b/pkg/commands/trait.go
index a1af30d32..c7b298671 100644
--- a/pkg/commands/trait.go
+++ b/pkg/commands/trait.go
@@ -9,8 +9,8 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/commands/util"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/plugins"
@@ -25,7 +25,7 @@ type commandOptions struct {
 
 	workloadName string
 	appName      string
-	app          *driver.Application
+	app          *api.Application
 	traitType    string
 	cmdutil.IOStreams
 }
@@ -96,16 +96,16 @@ func (o *commandOptions) Prepare(cmd *cobra.Command, args []string) error {
 	}
 	o.appName = args[0]
 	// get application
-	app, err := application.Load(o.Env.Name, o.appName)
+	app, err := appfile.LoadApplication(o.Env.Name, o.appName)
 	if err != nil {
-		if application.IsNotFound(o.appName, err) {
+		if appfile.IsNotFound(o.appName, err) {
 			return fmt.Errorf("the application %s doesn't exist in current env %s", o.appName, o.Env.Name)
 		}
 		return err
 	}
 
 	// get service name
-	serviceNames := application.GetComponents(app)
+	serviceNames := appfile.GetComponents(app)
 	if svcName := cmd.Flag(Service).Value.String(); svcName != "" {
 		for _, v := range serviceNames {
 			if v == svcName {
@@ -147,10 +147,10 @@ func (o *commandOptions) DetachTrait(cmd *cobra.Command, args []string) error {
 		return err
 	}
 	var traitType = o.Template.Name
-	if err = application.RemoveTrait(o.app, o.workloadName, traitType); err != nil {
+	if err = appfile.RemoveTrait(o.app, o.workloadName, traitType); err != nil {
 		return err
 	}
-	return application.Save(o.app, o.Env.Name)
+	return appfile.Save(o.app, o.Env.Name)
 }
 
 // Run executes create/update/detach trait
diff --git a/pkg/commands/up.go b/pkg/commands/up.go
index e0132d307..342c91fcc 100644
--- a/pkg/commands/up.go
+++ b/pkg/commands/up.go
@@ -19,9 +19,8 @@ import (
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
 	"github.com/oam-dev/kubevela/pkg/appfile"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/appfile/template"
-	"github.com/oam-dev/kubevela/pkg/application"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/oam"
 	"github.com/oam-dev/kubevela/pkg/utils/common"
@@ -96,13 +95,13 @@ func saveRemoteAppfile(url string) (string, error) {
 }
 
 type buildResult struct {
-	appFile     *appfile.AppFile
+	appFile     *api.AppFile
 	application *v1alpha2.Application
 	scopes      []oam.Object
 }
 
 func (o *AppfileOptions) export(filePath string, quiet bool) (*buildResult, []byte, error) {
-	var app *appfile.AppFile
+	var app *api.AppFile
 	var err error
 	if !quiet {
 		o.IO.Info("Parsing vela appfile ...")
@@ -114,9 +113,9 @@ func (o *AppfileOptions) export(filePath string, quiet bool) (*buildResult, []by
 				return nil, nil, err
 			}
 		}
-		app, err = appfile.LoadFromFile(filePath)
+		app, err = api.LoadFromFile(filePath)
 	} else {
-		app, err = appfile.Load()
+		app, err = api.Load()
 	}
 	if err != nil {
 		return nil, nil, err
@@ -131,7 +130,7 @@ func (o *AppfileOptions) export(filePath string, quiet bool) (*buildResult, []by
 		return nil, nil, err
 	}
 
-	appHandler := driver.NewApplication(app, tm)
+	appHandler := appfile.NewApplication(app, tm)
 
 	// new
 	retApplication, scopes, err := appHandler.BuildOAMApplication(o.Env, o.IO, appHandler.Tm, quiet)
@@ -189,9 +188,9 @@ func (o *AppfileOptions) Run(filePath string) error {
 	return o.ApplyApp(result.application, result.scopes)
 }
 
-func (o *AppfileOptions) saveToAppDir(f *appfile.AppFile) error {
-	app := &driver.Application{AppFile: f}
-	return application.Save(app, o.Env.Name)
+func (o *AppfileOptions) saveToAppDir(f *api.AppFile) error {
+	app := &api.Application{AppFile: f}
+	return appfile.Save(app, o.Env.Name)
 }
 
 // ApplyApp applys config resources for the app.
@@ -223,7 +222,7 @@ func (o *AppfileOptions) ApplyApp(app *v1alpha2.Application, scopes []oam.Object
 }
 
 func (o *AppfileOptions) apply(app *v1alpha2.Application, scopes []oam.Object) error {
-	if err := application.Run(context.TODO(), o.Kubecli, app, scopes); err != nil {
+	if err := appfile.Run(context.TODO(), o.Kubecli, app, scopes); err != nil {
 		return err
 	}
 	return nil
diff --git a/pkg/controller/core.oam.dev/v1alpha2/application/appfile_parser_test.go b/pkg/controller/core.oam.dev/v1alpha2/application/appfile_parser_test.go
index 603df5a64..587acf8ea 100644
--- a/pkg/controller/core.oam.dev/v1alpha2/application/appfile_parser_test.go
+++ b/pkg/controller/core.oam.dev/v1alpha2/application/appfile_parser_test.go
@@ -20,11 +20,11 @@ import (
 	"context"
 	"fmt"
 
+	"github.com/google/go-cmp/cmp"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
 
 	"github.com/crossplane/crossplane-runtime/apis/core/v1alpha1"
-	"github.com/google/go-cmp/cmp"
 	"github.com/stretchr/testify/assert"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -230,8 +230,8 @@ var _ = Describe("Test appFile parser", func() {
 		Expect(len(components)).To(BeEquivalentTo(1))
 		Expect(components[0].ObjectMeta).To(BeEquivalentTo(expectComponent.ObjectMeta))
 		Expect(components[0].TypeMeta).To(BeEquivalentTo(expectComponent.TypeMeta))
-		Expect(assert.ObjectsAreEqual(components[0].Spec.Workload.Object, expectComponent.Spec.Workload.Object)).To(BeEquivalentTo(true))
 		fmt.Println(cmp.Diff(components[0].Spec.Workload.Object, expectComponent.Spec.Workload.Object))
+		Expect(assert.ObjectsAreEqual(components[0].Spec.Workload.Object, expectComponent.Spec.Workload.Object)).To(BeEquivalentTo(true))
 	})
 
 })
diff --git a/pkg/cue/convert.go b/pkg/cue/convert.go
index f9a564fd9..777e9cafc 100644
--- a/pkg/cue/convert.go
+++ b/pkg/cue/convert.go
@@ -1,7 +1,6 @@
 package cue
 
 import (
-	"encoding/json"
 	"errors"
 	"fmt"
 	"io/ioutil"
@@ -9,55 +8,13 @@ import (
 	"strings"
 
 	"cuelang.org/go/cue"
-	cueJson "cuelang.org/go/pkg/encoding/json"
-	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 
 	"github.com/oam-dev/kubevela/apis/types"
 )
 
-// OutputFieldName is the name of the struct contains the CR data
-const OutputFieldName = "output"
-
 // para struct contains the parameter
 const specValue = "parameter"
 
-// Eval evaluates the spec with the parameter values
-func Eval(templatePath string, value map[string]interface{}) (*unstructured.Unstructured, error) {
-	r := cue.Runtime{}
-	b, err := ioutil.ReadFile(filepath.Clean(templatePath))
-	if err != nil {
-		return nil, err
-	}
-	template, err := r.Compile("", string(b)+BaseTemplate)
-	if err != nil {
-		return nil, fmt.Errorf("compile %s err %w", templatePath, err)
-	}
-	// fill in the parameter values and evaluate
-	tempValue := template.Value()
-	appValue, err := tempValue.Fill(value, specValue).Eval().Struct()
-	if err != nil {
-		return nil, fmt.Errorf("fill value to template err %w", err)
-	}
-	// fetch the spec struct content
-	final, err := appValue.FieldByName(OutputFieldName, true)
-	if err != nil {
-		return nil, fmt.Errorf("get template %s err %w", OutputFieldName, err)
-	}
-	if err := final.Value.Validate(cue.Concrete(true), cue.Final()); err != nil {
-		return nil, err
-	}
-	data, err := cueJson.Marshal(final.Value)
-	if err != nil {
-		return nil, fmt.Errorf("marshal final value err %w", err)
-	}
-	// need to unmarshal it to a map to get rid of the outer spec name
-	obj := make(map[string]interface{})
-	if err = json.Unmarshal([]byte(data), &obj); err != nil {
-		return nil, err
-	}
-	return &unstructured.Unstructured{Object: obj}, nil
-}
-
 // GetParameters get parameter from cue template
 func GetParameters(templatePath string) ([]types.Parameter, error) {
 	r := cue.Runtime{}
diff --git a/pkg/cue/convert_test.go b/pkg/cue/convert_test.go
index 4fa3c9525..cfc20bb79 100644
--- a/pkg/cue/convert_test.go
+++ b/pkg/cue/convert_test.go
@@ -4,56 +4,11 @@ import (
 	"testing"
 
 	"cuelang.org/go/cue"
-	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"github.com/stretchr/testify/assert"
 
 	"github.com/oam-dev/kubevela/apis/types"
-
-	"github.com/stretchr/testify/assert"
 )
 
-func TestEvalDeployment(t *testing.T) {
-	name := "myapp"
-	image := "nginx:v1"
-	cr, err := Eval("testdata/workloads/deployment.cue", map[string]interface{}{
-		"image": image,
-		"port":  8080,
-		"name":  name,
-		"env": []interface{}{
-			map[string]interface{}{
-				"name":  "MYDB",
-				"value": "true",
-			},
-		},
-	})
-	assert.NoError(t, err)
-	assert.Equal(t, cr.GetAPIVersion(), "apps/v1")
-	assert.Equal(t, cr.GetKind(), "Deployment")
-	assert.Equal(t, cr.GetName(), name)
-	// get containers
-	containers, found, err := unstructured.NestedSlice(cr.UnstructuredContent(), "spec", "template", "spec",
-		"containers")
-	assert.True(t, found)
-	assert.Nil(t, err)
-	// get first container
-	c, ok := containers[0].(map[string]interface{})
-	assert.True(t, ok)
-	// verify image
-	imageName, found, err := unstructured.NestedString(c, "image")
-	assert.True(t, found)
-	assert.Nil(t, err)
-	assert.Equal(t, imageName, image)
-	// verify env
-	envs, found, err := unstructured.NestedSlice(c, "env")
-	assert.True(t, found)
-	assert.Nil(t, err)
-	env, ok := envs[0].(map[string]interface{})
-	assert.True(t, ok)
-	envName, found, err := unstructured.NestedString(env, "name")
-	assert.True(t, found)
-	assert.Nil(t, err)
-	assert.Equal(t, envName, "MYDB")
-}
-
 func TestGetParameter(t *testing.T) {
 	params, err := GetParameters("testdata/workloads/metrics.cue")
 	assert.NoError(t, err)
diff --git a/pkg/dsl/definition/template.go b/pkg/dsl/definition/template.go
index 0190b2086..32d8c174c 100644
--- a/pkg/dsl/definition/template.go
+++ b/pkg/dsl/definition/template.go
@@ -5,8 +5,6 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/oam-dev/kubevela/pkg/dsl/task"
-
 	"cuelang.org/go/cue"
 	"cuelang.org/go/cue/build"
 	"github.com/pkg/errors"
@@ -18,9 +16,19 @@ import (
 
 	"github.com/oam-dev/kubevela/pkg/dsl/model"
 	"github.com/oam-dev/kubevela/pkg/dsl/process"
+	"github.com/oam-dev/kubevela/pkg/dsl/task"
 	"github.com/oam-dev/kubevela/pkg/oam"
 )
 
+const (
+	// OutputFieldName is the name of the struct contains the CR data
+	OutputFieldName = "output"
+	// OutputsFieldName is the name of the struct contains the map[string]CR data
+	OutputsFieldName = "outputs"
+	// PatchFieldName is the name of the struct contains the patch of CR data
+	PatchFieldName = "patch"
+)
+
 var (
 	metadataAccessor = meta.NewAccessor()
 )
@@ -85,7 +93,7 @@ func (wd *workloadDef) Complete(ctx process.Context) error {
 		if err := inst.Value().Err(); err != nil {
 			return errors.WithMessagef(err, "workloadDef %s eval", wd.name)
 		}
-		output := inst.Lookup("output")
+		output := inst.Lookup(OutputFieldName)
 		base, err := model.NewBase(output)
 		if err != nil {
 			return errors.WithMessagef(err, "workloadDef %s new base", wd.name)
@@ -121,7 +129,7 @@ func (wd *workloadDef) HealthCheck() error {
 	}
 	if wd.output != nil {
 		bt, _ := json.Marshal(wd.output)
-		if err := bi.AddFile("output", fmt.Sprintf("output: %s", string(bt))); err != nil {
+		if err := bi.AddFile(OutputFieldName, fmt.Sprintf("output: %s", string(bt))); err != nil {
 			return err
 		}
 	} else {
@@ -195,7 +203,7 @@ func (td *traitDef) Complete(ctx process.Context) error {
 			}
 		}
 
-		output := inst.Lookup("output")
+		output := inst.Lookup(OutputFieldName)
 		if output.Exists() {
 			other, err := model.NewOther(output)
 			if err != nil {
@@ -204,7 +212,7 @@ func (td *traitDef) Complete(ctx process.Context) error {
 			ctx.PutAssistants(process.Assistant{Ins: other, Type: td.name})
 		}
 
-		outputs := inst.Lookup("outputs")
+		outputs := inst.Lookup(OutputsFieldName)
 		st, err := outputs.Struct()
 		if err == nil {
 			for i := 0; i < st.Len(); i++ {
@@ -220,7 +228,7 @@ func (td *traitDef) Complete(ctx process.Context) error {
 			}
 		}
 
-		patcher := inst.Lookup("patch")
+		patcher := inst.Lookup(PatchFieldName)
 		if patcher.Exists() {
 			base, _ := ctx.Output()
 			p, err := model.NewOther(patcher)
diff --git a/pkg/dsl/model/instance.go b/pkg/dsl/model/instance.go
index e251ec0ae..c67292a97 100644
--- a/pkg/dsl/model/instance.go
+++ b/pkg/dsl/model/instance.go
@@ -38,7 +38,10 @@ func (inst *instance) compile() ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
-
+	// compiled object should be final and concrete value
+	if err := cueInst.Value().Validate(cue.Concrete(true), cue.Final()); err != nil {
+		return nil, err
+	}
 	return cueInst.Value().MarshalJSON()
 }
 
diff --git a/pkg/dsl/model/instance_test.go b/pkg/dsl/model/instance_test.go
index a4c6bf8ae..11b8e3fc4 100644
--- a/pkg/dsl/model/instance_test.go
+++ b/pkg/dsl/model/instance_test.go
@@ -4,7 +4,8 @@ import (
 	"testing"
 
 	"cuelang.org/go/cue"
-	"github.com/bmizerany/assert"
+	"github.com/stretchr/testify/assert"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 )
 
@@ -61,3 +62,65 @@ metadata: name: "test"
 		assert.Equal(t, false, other.IsBase())
 	}
 }
+
+func TestIncompleteError(t *testing.T) {
+	base := `parameter: {
+	name: string
+	// +usage=Which image would you like to use for your service
+	// +short=i
+	image: string
+	// +usage=Which port do you want customer traffic sent to
+	// +short=p
+	port: *8080 | int
+	env: [...{
+		name:  string
+		value: string
+	}]
+	cpu?: string
+}
+output: {
+	apiVersion: "apps/v1"
+	kind:       "Deployment"
+	metadata: name: parameter.name
+	spec: {
+		selector:
+			matchLabels:
+				app: parameter.name
+		template: {
+			metadata:
+				labels:
+					app: parameter.name
+			spec: containers: [{
+				image: parameter.image
+				name:  parameter.name
+				env:   parameter.env
+				ports: [{
+					containerPort: parameter.port
+					protocol:      "TCP"
+					name:          "default"
+				}]
+				if parameter["cpu"] != _|_ {
+					resources: {
+						limits:
+							cpu: parameter.cpu
+						requests:
+							cpu: parameter.cpu
+					}
+				}
+			}]
+	}
+	}
+}
+`
+
+	var r cue.Runtime
+	inst, err := r.Compile("-", base)
+	assert.NoError(t, err)
+	newbase, err := NewBase(inst.Value())
+	assert.NoError(t, err)
+	data, err := newbase.Unstructured()
+	assert.Error(t, err)
+	var expnil *unstructured.Unstructured
+	assert.Equal(t, expnil, data)
+
+}
diff --git a/pkg/server/traitHandler.go b/pkg/server/traitHandler.go
index f2c6f1cfb..09f8dc187 100644
--- a/pkg/server/traitHandler.go
+++ b/pkg/server/traitHandler.go
@@ -10,7 +10,7 @@ import (
 	ctrl "sigs.k8s.io/controller-runtime"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	util2 "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/plugins"
 	"github.com/oam-dev/kubevela/pkg/server/apis"
@@ -91,7 +91,7 @@ func (s *APIServer) DetachTrait(c *gin.Context) {
 // DoAttachTrait executes attaching trait operation
 func (s *APIServer) DoAttachTrait(c context.Context, body apis.TraitBody) (string, error) {
 	// Prepare
-	var appObj *driver.Application
+	var appObj *api.Application
 	fs := pflag.NewFlagSet("trait", pflag.ContinueOnError)
 	for _, f := range body.Flags {
 		fs.String(f.Name, f.Value, "")
@@ -125,7 +125,7 @@ func (s *APIServer) DoAttachTrait(c context.Context, body apis.TraitBody) (strin
 
 // DoDetachTrait executes detaching trait operation
 func (s *APIServer) DoDetachTrait(c context.Context, envName string, traitType string, componentName string, appName string, staging bool) (string, error) {
-	var appObj *driver.Application
+	var appObj *api.Application
 	var err error
 	if appName == "" {
 		appName = componentName
diff --git a/pkg/serverlib/application.go b/pkg/serverlib/application.go
index d64818cbd..808f5b328 100644
--- a/pkg/serverlib/application.go
+++ b/pkg/serverlib/application.go
@@ -14,8 +14,8 @@ import (
 
 	corev1alpha2 "github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/server/apis"
 )
@@ -176,7 +176,7 @@ func RetrieveApplicationStatusByName(ctx context.Context, c client.Client, appli
 
 // DeleteApp will delete app including server side
 func (o *DeleteOptions) DeleteApp() (string, error) {
-	if err := application.Delete(o.Env.Name, o.AppName); err != nil && !os.IsNotExist(err) {
+	if err := appfile.Delete(o.Env.Name, o.AppName); err != nil && !os.IsNotExist(err) {
 		return "", err
 	}
 	ctx := context.Background()
@@ -200,32 +200,32 @@ func (o *DeleteOptions) DeleteApp() (string, error) {
 
 // DeleteComponent will delete one component including server side.
 func (o *DeleteOptions) DeleteComponent(io cmdutil.IOStreams) (string, error) {
-	var app *driver.Application
+	var app *api.Application
 	var err error
 	if o.AppName != "" {
-		app, err = application.Load(o.Env.Name, o.AppName)
+		app, err = appfile.LoadApplication(o.Env.Name, o.AppName)
 	} else {
-		app, err = application.MatchAppByComp(o.Env.Name, o.CompName)
+		app, err = appfile.MatchAppByComp(o.Env.Name, o.CompName)
 	}
 	if err != nil {
 		return "", err
 	}
 
-	if len(application.GetComponents(app)) <= 1 {
+	if len(appfile.GetComponents(app)) <= 1 {
 		return o.DeleteApp()
 	}
 
 	// Remove component from local appfile
-	if err := application.RemoveComponent(app, o.CompName); err != nil {
+	if err := appfile.RemoveComponent(app, o.CompName); err != nil {
 		return "", err
 	}
-	if err := application.Save(app, o.Env.Name); err != nil {
+	if err := appfile.Save(app, o.Env.Name); err != nil {
 		return "", err
 	}
 
 	// Remove component from appConfig in k8s cluster
 	ctx := context.Background()
-	if err := application.BuildRun(ctx, app, o.Client, o.Env, io); err != nil {
+	if err := appfile.BuildRun(ctx, app, o.Client, o.Env, io); err != nil {
 		return "", err
 	}
 
@@ -257,7 +257,7 @@ func chooseSvc(services []string) (string, error) {
 }
 
 // GetServicesWhenDescribingApplication gets the target services list either from cli `--svc` flag or from survey
-func GetServicesWhenDescribingApplication(cmd *cobra.Command, app *driver.Application) ([]string, error) {
+func GetServicesWhenDescribingApplication(cmd *cobra.Command, app *api.Application) ([]string, error) {
 	var svcFlag string
 	var svcFlagStatus string
 	// to store the value of flag `--svc` set in Cli, or selected value in survey
diff --git a/pkg/serverlib/trait.go b/pkg/serverlib/trait.go
index f9210f8e8..7ab55ed44 100644
--- a/pkg/serverlib/trait.go
+++ b/pkg/serverlib/trait.go
@@ -5,14 +5,16 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
+
+	"github.com/oam-dev/kubevela/pkg/appfile"
+
 	"cuelang.org/go/cue"
 	plur "github.com/gertd/go-pluralize"
 	"github.com/spf13/pflag"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/plugins"
 )
@@ -147,7 +149,7 @@ func ValidateAndMutateForCore(traitType, workloadName string, flags *pflag.FlagS
 }
 
 // AddOrUpdateTrait attach trait to workload
-func AddOrUpdateTrait(env *types.EnvMeta, appName string, componentName string, flagSet *pflag.FlagSet, template types.Capability) (*driver.Application, error) {
+func AddOrUpdateTrait(env *types.EnvMeta, appName string, componentName string, flagSet *pflag.FlagSet, template types.Capability) (*api.Application, error) {
 	err := ValidateAndMutateForCore(template.Name, componentName, flagSet, env)
 	if err != nil {
 		return nil, err
@@ -155,12 +157,12 @@ func AddOrUpdateTrait(env *types.EnvMeta, appName string, componentName string,
 	if appName == "" {
 		appName = componentName
 	}
-	app, err := application.Load(env.Name, appName)
+	app, err := appfile.LoadApplication(env.Name, appName)
 	if err != nil {
 		return app, err
 	}
 	traitAlias := template.Name
-	traitData, err := application.GetTraitsByType(app, componentName, traitAlias)
+	traitData, err := appfile.GetTraitsByType(app, componentName, traitAlias)
 	if err != nil {
 		return app, err
 	}
@@ -188,19 +190,19 @@ func AddOrUpdateTrait(env *types.EnvMeta, appName string, componentName string,
 			return nil, fmt.Errorf("get flag(s) \"%s\" err %w", name, err)
 		}
 	}
-	if err = application.SetTrait(app, componentName, traitAlias, traitData); err != nil {
+	if err = appfile.SetTrait(app, componentName, traitAlias, traitData); err != nil {
 		return app, err
 	}
-	return app, application.Save(app, env.Name)
+	return app, appfile.Save(app, env.Name)
 }
 
 // TraitOperationRun will check if it's a stage operation before run
-func TraitOperationRun(ctx context.Context, c client.Client, env *types.EnvMeta, appObj *driver.Application,
+func TraitOperationRun(ctx context.Context, c client.Client, env *types.EnvMeta, appObj *api.Application,
 	staging bool, io cmdutil.IOStreams) (string, error) {
 	if staging {
 		return "Staging saved", nil
 	}
-	err := application.BuildRun(ctx, appObj, c, env, io)
+	err := appfile.BuildRun(ctx, appObj, c, env, io)
 	if err != nil {
 		return "", err
 	}
@@ -208,18 +210,18 @@ func TraitOperationRun(ctx context.Context, c client.Client, env *types.EnvMeta,
 }
 
 // PrepareDetachTrait will detach trait in local AppFile
-func PrepareDetachTrait(envName string, traitType string, componentName string, appName string) (*driver.Application, error) {
-	var appObj *driver.Application
+func PrepareDetachTrait(envName string, traitType string, componentName string, appName string) (*api.Application, error) {
+	var appObj *api.Application
 	var err error
 	if appName == "" {
 		appName = componentName
 	}
-	if appObj, err = application.Load(envName, appName); err != nil {
+	if appObj, err = appfile.LoadApplication(envName, appName); err != nil {
 		return appObj, err
 	}
 
-	if err = application.RemoveTrait(appObj, componentName, traitType); err != nil {
+	if err = appfile.RemoveTrait(appObj, componentName, traitType); err != nil {
 		return appObj, err
 	}
-	return appObj, application.Save(appObj, envName)
+	return appObj, appfile.Save(appObj, envName)
 }
diff --git a/pkg/serverlib/trait_checker.go b/pkg/serverlib/trait_checker.go
index b5a6ccd89..7478c9054 100644
--- a/pkg/serverlib/trait_checker.go
+++ b/pkg/serverlib/trait_checker.go
@@ -5,6 +5,10 @@ import (
 	"encoding/json"
 	"fmt"
 
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
+
+	"github.com/oam-dev/kubevela/pkg/appfile"
+
 	runtimev1alpha1 "github.com/crossplane/crossplane-runtime/apis/core/v1alpha1"
 	v12 "k8s.io/api/autoscaling/v1"
 	v1 "k8s.io/api/core/v1"
@@ -14,8 +18,6 @@ import (
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1alpha2"
 	"github.com/oam-dev/kubevela/apis/standard.oam.dev/v1alpha1"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
 	autoscalers "github.com/oam-dev/kubevela/pkg/controller/standard.oam.dev/v1alpha1/autoscaler"
 	"github.com/oam-dev/kubevela/pkg/oam"
 )
@@ -46,7 +48,7 @@ func GetChecker(traitType string, c client.Client) Checker {
 
 // Checker defines the interface of checker
 type Checker interface {
-	Check(ctx context.Context, reference runtimev1alpha1.TypedReference, compName string, appConfig *v1alpha2.ApplicationConfiguration, app *driver.Application) (CheckStatus, string, error)
+	Check(ctx context.Context, reference runtimev1alpha1.TypedReference, compName string, appConfig *v1alpha2.ApplicationConfiguration, app *api.Application) (CheckStatus, string, error)
 }
 
 // DefaultChecker defines the default checker
@@ -55,7 +57,7 @@ type DefaultChecker struct {
 }
 
 // Check default check object if exist and print the configs
-func (d *DefaultChecker) Check(ctx context.Context, reference runtimev1alpha1.TypedReference, compName string, appConfig *v1alpha2.ApplicationConfiguration, app *driver.Application) (CheckStatus, string, error) {
+func (d *DefaultChecker) Check(ctx context.Context, reference runtimev1alpha1.TypedReference, compName string, appConfig *v1alpha2.ApplicationConfiguration, app *api.Application) (CheckStatus, string, error) {
 	tr, err := GetUnstructured(ctx, d.c, appConfig.Namespace, reference)
 	if err != nil {
 		return StatusChecking, "", err
@@ -65,7 +67,7 @@ func (d *DefaultChecker) Check(ctx context.Context, reference runtimev1alpha1.Ty
 		message, err := GetStatusFromObject(tr)
 		return StatusDone, message, err
 	}
-	traitData, err := application.GetTraitsByType(app, compName, traitType)
+	traitData, err := appfile.GetTraitsByType(app, compName, traitType)
 	if err != nil {
 		return StatusDone, err.Error(), err
 	}
@@ -82,7 +84,7 @@ type MetricChecker struct {
 }
 
 // Check metrics
-func (d *MetricChecker) Check(ctx context.Context, reference runtimev1alpha1.TypedReference, _ string, appConfig *v1alpha2.ApplicationConfiguration, _ *driver.Application) (CheckStatus, string, error) {
+func (d *MetricChecker) Check(ctx context.Context, reference runtimev1alpha1.TypedReference, _ string, appConfig *v1alpha2.ApplicationConfiguration, _ *api.Application) (CheckStatus, string, error) {
 	metric := v1alpha1.MetricsTrait{}
 	if err := d.c.Get(ctx, client.ObjectKey{Namespace: appConfig.Namespace, Name: reference.Name}, &metric); err != nil {
 		return StatusChecking, "", err
@@ -109,7 +111,7 @@ type RouteChecker struct {
 }
 
 // Check understand route status
-func (d *RouteChecker) Check(ctx context.Context, reference runtimev1alpha1.TypedReference, _ string, appConfig *v1alpha2.ApplicationConfiguration, _ *driver.Application) (CheckStatus, string, error) {
+func (d *RouteChecker) Check(ctx context.Context, reference runtimev1alpha1.TypedReference, _ string, appConfig *v1alpha2.ApplicationConfiguration, _ *api.Application) (CheckStatus, string, error) {
 	route := v1alpha1.Route{}
 	if err := d.c.Get(ctx, client.ObjectKey{Namespace: appConfig.Namespace, Name: reference.Name}, &route); err != nil {
 		return StatusChecking, "", err
@@ -155,7 +157,7 @@ type AutoscalerChecker struct {
 }
 
 // Check should understand autoscale trait status
-func (d *AutoscalerChecker) Check(ctx context.Context, ref runtimev1alpha1.TypedReference, _ string, appConfig *v1alpha2.ApplicationConfiguration, _ *driver.Application) (CheckStatus, string, error) {
+func (d *AutoscalerChecker) Check(ctx context.Context, ref runtimev1alpha1.TypedReference, _ string, appConfig *v1alpha2.ApplicationConfiguration, _ *api.Application) (CheckStatus, string, error) {
 	traitName := ref.Name
 	var scaler v1alpha1.Autoscaler
 	if err := d.c.Get(ctx, client.ObjectKey{Namespace: appConfig.Namespace, Name: traitName}, &scaler); err != nil {
diff --git a/pkg/serverlib/workload.go b/pkg/serverlib/workload.go
index 3de5f7022..9f485525d 100644
--- a/pkg/serverlib/workload.go
+++ b/pkg/serverlib/workload.go
@@ -11,8 +11,8 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
 	"github.com/oam-dev/kubevela/apis/types"
-	"github.com/oam-dev/kubevela/pkg/appfile/storage/driver"
-	"github.com/oam-dev/kubevela/pkg/application"
+	"github.com/oam-dev/kubevela/pkg/appfile"
+	"github.com/oam-dev/kubevela/pkg/appfile/api"
 	"github.com/oam-dev/kubevela/pkg/commands/util"
 	cmdutil "github.com/oam-dev/kubevela/pkg/commands/util"
 	"github.com/oam-dev/kubevela/pkg/plugins"
@@ -23,30 +23,30 @@ type RunOptions struct {
 	Env          *types.EnvMeta
 	WorkloadName string
 	KubeClient   client.Client
-	App          *driver.Application
+	App          *api.Application
 	AppName      string
 	Staging      bool
 	util.IOStreams
 }
 
 // LoadIfExist will load Application from local dir
-func LoadIfExist(envName string, workloadName string, appGroup string) (*driver.Application, error) {
+func LoadIfExist(envName string, workloadName string, appGroup string) (*api.Application, error) {
 	var appName string
 	if appGroup != "" {
 		appName = appGroup
 	} else {
 		appName = workloadName
 	}
-	app, err := application.Load(envName, appName)
+	app, err := appfile.LoadApplication(envName, appName)
 
 	// can't handle
-	if err != nil && !application.IsNotFound(appName, err) {
+	if err != nil && !appfile.IsNotFound(appName, err) {
 		return nil, err
 	}
 
 	// compatible application not found
 	if app == nil {
-		app, err = application.NewEmptyApplication()
+		app, err = appfile.NewEmptyApplication()
 		if err != nil {
 			return nil, err
 		}
@@ -57,12 +57,12 @@ func LoadIfExist(envName string, workloadName string, appGroup string) (*driver.
 }
 
 // BaseComplete will construct an Application from cli parameters.
-func BaseComplete(envName string, workloadName string, appName string, flagSet *pflag.FlagSet, workloadType string) (*driver.Application, error) {
+func BaseComplete(envName string, workloadName string, appName string, flagSet *pflag.FlagSet, workloadType string) (*api.Application, error) {
 	app, err := LoadIfExist(envName, workloadName, appName)
 	if err != nil {
 		return nil, err
 	}
-	tp, workloadData := application.GetWorkload(app, workloadName)
+	tp, workloadData := appfile.GetWorkload(app, workloadName)
 	if tp == "" {
 		if workloadType == "" {
 			return nil, fmt.Errorf("must specify workload type for application %s", workloadName)
@@ -127,18 +127,18 @@ func BaseComplete(envName string, workloadName string, appName string, flagSet *
 			return nil, fmt.Errorf("get flag(s) \"%s\" err %w", v.Name, err)
 		}
 	}
-	if err = application.SetWorkload(app, workloadName, tp, workloadData); err != nil {
+	if err = appfile.SetWorkload(app, workloadName, tp, workloadData); err != nil {
 		return app, err
 	}
-	return app, application.Save(app, envName)
+	return app, appfile.Save(app, envName)
 }
 
 // BaseRun will check if it's a stating operation before run
-func BaseRun(staging bool, app *driver.Application, kubeClient client.Client, env *types.EnvMeta, io cmdutil.IOStreams) (string, error) {
+func BaseRun(staging bool, app *api.Application, kubeClient client.Client, env *types.EnvMeta, io cmdutil.IOStreams) (string, error) {
 	if staging {
 		return "Staging saved", nil
 	}
-	if err := application.BuildRun(context.Background(), app, kubeClient, env, io); err != nil {
+	if err := appfile.BuildRun(context.Background(), app, kubeClient, env, io); err != nil {
 		err = fmt.Errorf("create app err: %w", err)
 		return "", err
 	}