AWS m2 documentation change

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

File: m2/latest/userguide/ba-runtime-config-app-secrets.md

Summary

Updated service availability notice to announce closure of new customer access for self-managed experience and reiterate managed environment closure

Security assessment

Change occurs in secrets management documentation but doesn't alter security guidance. Announcement of ongoing security improvements isn't evidence of security issue resolution.

Diff

diff --git a/m2/latest/userguide/ba-runtime-config-app-secrets.md b/m2/latest/userguide/ba-runtime-config-app-secrets.md
index 18a73249d..e2b6f0371 100644
--- a//m2/latest/userguide/ba-runtime-config-app-secrets.md
+++ b//m2/latest/userguide/ba-runtime-config-app-secrets.md
@@ -9 +9,3 @@ Secrets for AuroraOther secrets
-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).