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description: "Curated, AI-ranked Embedded Servlet Containers resources for the 2026 Cloud Native architect: top-tier tools, guides and references (Developer Ecosystem)."
---
# Embedded Servlet Containers in SpringBoot: Jetty, Tomcat, Undertow and more

!!! tip "Nubenetes V2 Elite Portal"
    You are browsing the AI-Curated V2 Elite Edition. Looking for the exhaustive list of references? Check out the [**V1 Historical Archive**](/v1/embedded-servlet-containers/).

!!! info "Architectural Context"
    Detailed reference for Embedded Servlet Containers in SpringBoot: Jetty, Tomcat, Undertow and more in the context of Developer Ecosystem.

## Platform Engineering

### Application Servers

#### Migration

  - **(2021)** [Apache Tomcat migration tool for Jakarta EE](https://github.com/apache/tomcat-jakartaee-migration) <span class='md-tag md-tag--info'>⭐ 188</span> <svg class="v2-sparkline" width="50" height="15" viewBox="0 0 50 15" style="vertical-align: middle; display: inline-block; margin-left: 6px;" title="Activity Trend"><defs><linearGradient id="spark-grad-40c5c6de" x1="0" y1="0" x2="1" y2="0"><stop offset="0%" stop-color="rgba(34, 211, 238, 0.2)" /><stop offset="100%" stop-color="var(--md-accent-fg-color)" /></linearGradient></defs><path class="v2-sparkline-path" d="M 0 13 L 10 9 L 20 5 L 30 2 L 40 9 L 50 11" fill="none" stroke="url(#spark-grad-40c5c6de)" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round" /><circle cx="50" cy="11" r="2" fill="var(--md-accent-fg-color)" /></svg> <span class='md-tag md-tag--warning'>[JAVA CONTENT]</span> 🌟🌟 <span class='md-tag md-tag--critical'>[LEGACY]</span> — A command-line utility designed to automatically migrate legacy Java EE 8 web applications to modern Jakarta EE (9+) architectures. It translates package namespaces from `javax.*` to `jakarta.*` in binaries and source code.
#### Web Servers

  - **(2026)** [Undertow](https://undertow.io) <span class='md-tag md-tag--warning'>[JAVA CONTENT]</span> <span class='md-tag md-tag--critical'>[ADVANCED LEVEL]</span>  <span class='md-tag md-tag--info'>[COMMUNITY-TOOL]</span> — A highly performant, modular web server designed by Red Hat. Written in Java, it features non-blocking, asynchronous capabilities, functioning as a powerful, lightweight container engine for high-density microservices.

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