AWS acm high security documentation change
Summary
Added entry explaining reduction of public certificate validity to 198 days for CA/B Forum compliance
Security assessment
Explicitly documents security-focused compliance with upcoming certificate lifetime standards (max 200 days). Provides security context for industry-required changes.
Diff
diff --git a/acm/latest/userguide/dochistory.md b/acm/latest/userguide/dochistory.md index 4cf98aa05..a81823a8f 100644 --- a//acm/latest/userguide/dochistory.md +++ b//acm/latest/userguide/dochistory.md @@ -10,0 +11 @@ Change| Description| Date +Updated public certificate validity period| Public ACM certificates are now valid for 198 days, reduced from 13 months (395 days). With this update, ACM issued public certificates will be compliant with upcoming certificate lifetime requirements from the CA/B Forum. Per the new requirements, public certificates issued after March 15th 2026 must have a maximum validity of 200 days. The renewal window for public certificates has been updated to 45 days before expiration. Private certificates remain valid for 13 months (395 days).| February 18, 2026