Comprehensive Detailed Explanation with all AWS References
To resolve AccessDenied errors:
IAM Policy Validation:
Use IAM Access Analyzer to ensure that the policy attached to the role allows the necessary S3 actions (e.g., s3:GetObject).
Validate that the role is correctly assumed by the application.
[Reference:IAM Policy Simulator and Access Analyzer, Troubleshooting Steps:, Check the bucket policy for explicit deny statements., Ensure the application assumes the correct role with valid permissions., Reference:Troubleshooting Access Denied Errors, Incorrect Options:, A:Attaching a resource policy might expose the bucket more broadly, reducing security., B:Deploying the application in a different region is unnecessary and unrelated to the issue., D:Disabling Block Public Access is irrelevant unless public access is required, which is not stated., , , , ]
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