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Announcing upcoming changes to the AWS Security Token Service global endpoint

Security Blog

AWS is making changes to the AWS Security Token Service (STS) global endpoint to improve resiliency and performance:

  • Starting in early 2025, STS global endpoint requests will be automatically served in the same Region as deployed workloads
  • Applies to AWS Regions enabled by default, with gradual rollout beginning in Europe (Stockholm) Region
  • CloudTrail logs will be updated with new fields to clarify endpoint and serving Region
  • Requests to global endpoint will continue to have `us-east-1` as the `aws:RequestedRegion`
  • Global endpoint requests will have a separate request quota from Regional endpoints

AWS recommends using Regional STS endpoints whenever possible, especially for workloads outside AWS or in opt-in Regions.

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