AWS launched AWS Security Token Service (AWS STS) in August 2011 with a single global endpoint (https://sts.amazonaws.com), hosted in the US East (N. Virginia) AWS Region. To reduce dependency on a single Region, STS launched AWS STS…
Article Source
https://aws.amazon.com/blogs/security/announcing-upcoming-changes-to-the-aws-security-token-service-global-endpoint/


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