add note about serverless support (#379)

docs/intro.asciidoc

@@ -8,6 +8,11 @@ It has a default configuration that suits most common use cases and built-in sup
 The agent is built on top of https://opentelemetry.io/[OpenTelemetry], enabling you to add custom instrumentation with the
 https://opentelemetry.io/docs/instrumentation/java/manual/[OpenTelemetry Java API].
 
+[NOTE]
+====
+The Elastic APM Android Agent is not compatible with {serverless-docs}[{serverless-full}].
+====
+
 [float]
 [[how-it-works]]
 === How does the Agent work?
@@ -30,4 +35,4 @@ More detailed information on how the Agent works can be found in the <<faq-how-d
 === Additional components
 
 APM Agents work in conjunction with the {apm-guide-ref}/index.html[APM Server], {ref}/index.html[Elasticsearch], and {kibana-ref}/index.html[Kibana].
-The {apm-guide-ref}/index.html[APM Guide] provides details on how these components work together, and provides a matrix outlining {apm-guide-ref}/agent-server-compatibility.html[Agent and Server compatibility].
+The {apm-guide-ref}/index.html[APM Guide] provides details on how these components work together, and provides a matrix outlining {apm-guide-ref}/agent-server-compatibility.html[Agent and Server compatibility].