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AWS Certified Solutions Architect study material · question 28 of 500

What does the default S3 Object Ownership setting, bucket owner enforced, do?

  1. It disables ACLs and makes the bucket owner the owner of every object
  2. It leaves ACLs enabled but ignores them for cross-account uploads
  3. It transfers billing for the objects to the uploading account
  4. It blocks uploads from any account other than the bucket owner
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Answer: A. It disables ACLs and makes the bucket owner the owner of every object

Bucket owner enforced turns ACLs off, so the bucket owner owns all objects and access is decided by policies alone.

Source: Security best practices for Amazon S3 (Amazon Web Services) — Disable access control lists (ACLs)

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