[[apm-features]]
== Elastic APM features

IMPORTANT: {deprecation-notice-data}
If you've already upgraded, see <<features>>.

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<titleabbrev>Features</titleabbrev>
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* <<data-security>>
* <<distributed-tracing>>
* <<rum>>
* <<trace-sampling>>
* <<opentracing>>
* <<open-telemetry-elastic>>
* <<observability-integrations>>
* <<apm-cross-cluster-search>>

include::./data-security.asciidoc[]

include::./distributed-tracing.asciidoc[]

include::./rum.asciidoc[]

include::./trace-sampling.asciidoc[]

include::./opentracing.asciidoc[]

include::./opentelemetry-elastic.asciidoc[]

include::./obs-integrations.asciidoc[]

include::./cross-cluster-search.asciidoc[]