How to Restrict Amazon S3 Bucket Access to a Specific IAM Role
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February 14, 2025: This article has been updated to recommend restricting S3 bucket access to an IAM role through the aws:PrincipalArn condition key instead of the aws:userid condition key. April 2, 2021: We corrected an error in the policy examples for granting cross-account bucket access to a specific IAM role. For more insights, check out this another blog post.
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