AWS m2 documentation change

Service: m2 · 2026-07-01 · Documentation low

File: m2/latest/userguide/ba-runtime-dependencies-ec2.md

Summary

Added announcement about self-managed experience deprecation and clarified continued security investments

Security assessment

Mentions security improvements as part of ongoing maintenance but doesn't document new security features or address vulnerabilities. Change is operational/service availability focused.

Diff

diff --git a/m2/latest/userguide/ba-runtime-dependencies-ec2.md b/m2/latest/userguide/ba-runtime-dependencies-ec2.md
index c771be063..9f52e623e 100644
--- a//m2/latest/userguide/ba-runtime-dependencies-ec2.md
+++ b//m2/latest/userguide/ba-runtime-dependencies-ec2.md
@@ -9 +9,3 @@ PrerequisitesInstallation steps
-AWS Mainframe Modernization Service (Managed Runtime Environment experience) is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html).
+After careful consideration, we have made the decision to close new customer access to **AWS Mainframe Modernization self-managed experience** , effective July 30, 2026. Existing customers can continue to use the service as normal. AWS continues to invest in security and availability improvements for AWS Mainframe Modernization self-managed experience, but we do not plan to introduce new features. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). 
+
+**AWS Mainframe Modernization Service (Managed Runtime Environment experience)** is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html).