[Elastic APM](https://www.elastic.co/guide/en/apm/get-started/current/overview.html) is an application performance monitoring system built on the Elastic Stack. This chart is to install the server part of the system.
See the official documentation to setup the agent part of the system.
Even though apm-server is built by the Elastic team, it supports alternative outputs other than Elasticsearch via built-in beat output plugins and community plugins. For example, [awsbeats](https://github.com/s12v/awsbeats) enables apm-server to write collected application traces to AWS Kinesis Streams.
Other changelog:
- Include the commented-out elasticsearch output too support common use-cases
- Include the configuraion table in the README
