AWS Organizations – Advantages and Security

Advantages

• Enables a multi-account strategy, offering better isolation and governance compared to a single account with multiple VPCs.

• Simplifies cost allocation and tracking through consistent tagging standards across accounts.

• Allows centralized logging by enabling CloudTrail in all accounts and sending logs to a central S3 bucket.

• Supports centralization of CloudWatch Logs in a dedicated logging account for easier monitoring and compliance.

• Facilitates cross-account administration by using IAM Cross-Account Roles instead of sharing credentials.

Security

• Apply Service Control Policies (SCPs) to restrict permissions at the OU or account level, ensuring accounts cannot exceed defined security boundaries.

• Use least privilege principles when creating cross-account roles and limit trusted entities.

• Ensure CloudTrail is enabled organization-wide to maintain a full audit trail of all activities.

• Protect the Management Account with MFA and restricted access, as it has full control over all accounts.

• Periodically review account activity and unused accounts to reduce the attack surface.