Simplify cross-partition access with AWS IAM outbound identity federation

You can now use tokens from AWS Identity and Access Management (IAM) outbound federation to assume roles in other Amazon Web Services (AWS) partitions. When your workloads run across AWS partitions such as Commercial, China, GovCloud (US), and European Sovereign Cloud, a workload in one partition might need to access resources or communicate with AWS […]

Summary from AWS Security Blog.

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