AWS m2 documentation change

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

File: m2/latest/userguide/stromasys.md

Summary

Added service availability notice regarding discontinued new customer access to AWS Mainframe Modernization self-managed experience effective 2026.

Security assessment

No evidence of security fixes or vulnerabilities in the diff. The security improvements reference is part of standard service maintenance language.

Diff

diff --git a/m2/latest/userguide/stromasys.md b/m2/latest/userguide/stromasys.md
index 5e1c2e0e6..8cdb96946 100644
--- a//m2/latest/userguide/stromasys.md
+++ b//m2/latest/userguide/stromasys.md
@@ -9 +9,3 @@ Introduction to Charon-SSPSupported guest operating systemsCharon-SSP cloud inst
-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).