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AWS appstream2 documentation change

Service: appstream2 · 2026-04-04 · Documentation low

File: appstream2/latest/developerguide/usage-metrics-multi-session.md

Summary

Added documentation for three new drain mode metrics: 'DrainingCapacity', 'DrainModeActiveUserSessionCapacity', and 'DrainModeUnusedUserSessionCapacity'.

Security assessment

This adds monitoring metrics documentation for operational visibility. No security vulnerabilities or security features are addressed.

Diff

diff --git a/appstream2/latest/developerguide/usage-metrics-multi-session.md b/appstream2/latest/developerguide/usage-metrics-multi-session.md
index 6a0f3c769..bbb8a8e79 100644
--- a//appstream2/latest/developerguide/usage-metrics-multi-session.md
+++ b//appstream2/latest/developerguide/usage-metrics-multi-session.md
@@ -37,0 +38,3 @@ Monitoring this metric helps with decisions about increasing or decreasing the v
+`DrainingCapacity` |  The number of instances in Drain Mode. | [Fleet] | Average, Minimum, Maximum | Count  
+`DrainModeActiveUserSessionCapacity` |  The number of active user sessions on instances in Drain Mode. | [Fleet] | Average, Minimum, Maximum | Count  
+`DrainModeUnusedUserSessionCapacity` |  The number of unused session slots on instances in Drain Mode which cannot be used for user session provisioning. | [Fleet] | Average, Minimum, Maximum | Count