A company uses a single organization in AWS Organizations with all features enabled to manage...

The correct answer is B. The requirement is resource-side protection for all current and future private Amazon ECR repositories across the organization. AWS Organizations resource control policies are designed to centrally restrict permissions on resources in member accounts and are appropriate when external principals must be prevented from accessing organization-owned resources. AWS documentation lists Amazon Elastic Container Registry as a supported service for RCPs. A condition such as aws:PrincipalOrgID enforces that only principals from the same AWS Organization can access the resources. SCPs restrict principals in accounts, not resource exposure to external principals. Modifying IAM policies in hundreds of accounts is operationally poor and does not protect future repository policies consistently. AWS RAM is not the right control plane for private ECR repository access. (AWS Documentation)

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