AWS polly: Clarify Polly CloudWatch 4XX/5XX metric descriptions
Summary
Added a doc-history entry clarifying that 4XXCount reflects client-side errors and 5XXCount reflects server-side errors in Amazon Polly CloudWatch metrics.
Security assessment
Clarifies error metric semantics for monitoring; tangentially related to observability/logging but not a security feature or vulnerability fix.
Evidence
+Clarified CloudWatch metrics descriptions| The Amazon Polly CloudWatch metric descriptions now clarify that `4XXCount` reflects client-side errors and `5XXCount` reflects server-side errors. For more information, see [Integrating CloudWatch with Amazon Polly](https://docs.aws.amazon.com/polly/latest/dg/cloud-watch.html).| September 15, 2026
Diff
diff --git a/polly/latest/dg/doc-history.md b/polly/latest/dg/doc-history.md index 4fea2b28a..5f0fd68c3 100644 --- a//polly/latest/dg/doc-history.md +++ b//polly/latest/dg/doc-history.md @@ -17,0 +18 @@ Change| Description| Date +Clarified CloudWatch metrics descriptions| The Amazon Polly CloudWatch metric descriptions now clarify that `4XXCount` reflects client-side errors and `5XXCount` reflects server-side errors. For more information, see [Integrating CloudWatch with Amazon Polly](https://docs.aws.amazon.com/polly/latest/dg/cloud-watch.html).| September 15, 2026