AWS AWSCloudFormation high security documentation change
Summary
Added end-of-support notice for Amazon EKS AL2-optimized AMIs and migration guidance to AL2023
Security assessment
The change explicitly states that AL2 AMIs will no longer receive security patches after 11/26/25, which creates security risks if not addressed. This directly relates to maintaining security posture by encouraging migration to supported AMIs.
Diff
diff --git a/AWSCloudFormation/latest/TemplateReference/aws-properties-batch-computeenvironment-ec2configurationobject.md b/AWSCloudFormation/latest/TemplateReference/aws-properties-batch-computeenvironment-ec2configurationobject.md index 0538a42f0..fa9afd331 100644 --- a//AWSCloudFormation/latest/TemplateReference/aws-properties-batch-computeenvironment-ec2configurationobject.md +++ b//AWSCloudFormation/latest/TemplateReference/aws-properties-batch-computeenvironment-ec2configurationobject.md @@ -111,0 +112,6 @@ If the `imageIdOverride` parameter isn't specified, then a recent [Amazon EKS-op +###### Important + +Starting end of October 2025 Amazon EKS optimized Amazon Linux 2023 AMIs will be the default on AWS Batch for EKS versions prior to 1.33. Starting from Kubernetes version 1.33, EKS optimized Amazon Linux 2023 AMIs will be the default when it becomes supported on AWS Batch. + +AWS will end support for Amazon EKS AL2-optimized and AL2-accelerated AMIs, starting 11/26/25. You can continue using AWS Batch-provided Amazon EKS optimized Amazon Linux 2 AMIs on your Amazon EKS compute environments beyond the 11/26/25 end-of-support date, these compute environments will no longer receive any new software updates, security patches, or bug fixes from AWS. For more information on upgrading from AL2 to AL2023, see [How to upgrade from EKS AL2 to EKS AL2023]() in the _AWS Batch User Guide_. +