[8.13](backport #3953) Clarify descriptions of APM indicators for SLOs (

#4017) * Clarify descriptions of APM indicators for SLOs (#3953) --------- Co-authored-by: Gil Raphaelli <[email protected]> (cherry picked from commit 4770b0c) Co-authored-by: DeDe Morton <[email protected]>
elastic · Jul 1, 2024 · 455f869 · 455f869
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commit 455f869
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/docs/en/observability/slo-create.asciidoc b/docs/en/observability/slo-create.asciidoc
@@ -139,15 +139,16 @@ When defining a histogram metric SLI, set the following fields:
 [[apm-latency-sli]]
 === APM latency
 
-Create an indicator based on the APM data that you received from your instrumented services and a latency threshold.
+Create an indicator based on latency data received from your instrumented services and a latency threshold.
 
 *Example:* You can define an indicator on an APM service named `banking-service` for the `production` environment, and the transaction name `POST /deposit` with a latency threshold value of 300ms.
 
 [discrete]
 [[apm-availability-sli]]
 === APM availability
 
-Create an indicator based on the APM data received from your instrumented services.
+Create an indicator based on the availability of your instrumented services.
+Availability is determined by calculating the percentage of successful transactions (`event.outcome : "success"`) out of the total number of successful and failed transactions—unknown outcomes are excluded.
 
 *Example:* You can define an indicator on an APM service named `search-service` for the `production` environment, and the transaction name `POST /search`.