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AWS STS simplifies session token size limits and adds session token size monitoring

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AWS·Sep 15, 2026, 10:42 PMFeatureAI-assisted summary

Summary

Unified token size limit to 4,096 bytes, removing separate limits for policies and tags
Added response fields, CloudTrail logs, and CloudWatch metrics for token size and utilization
Introduced optional API parameter to generate max‑size tokens for testing

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Official source Last checked Sep 20, 2026, 3:04 PM

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