
    Service control policies (SCPs) are powerful tools in AWS Organizations that help control access to AWS services across multiple accounts, enabling organizations to enforce compliance, security, and governance policies through permission guardrails.


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This article provides comprehensive guidance on using Service Control Policies (SCPs) in AWS Organizations to achieve operational excellence and implement robust security controls across multiple accounts.
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<li>SCPs help control access to AWS services and resources across multiple accounts</li>
<li>Recommended to organize Organizational Units (OUs) based on security and operational needs</li>
<li>Key quota limits include:
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<li>Max 5 SCPs per root, OU, and account</li>
<li>Max 10,000 SCPs in an organization</li>
<li>Max 5120 bytes per SCP document</li>
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<li>SCP evaluation follows a deny-by-default model</li>
<li>Use SCPs for coarse-grained controls and identity-based policies for fine-grained permissions</li>
<li>Recommended to automate SCP validation and deployment using Infrastructure as Code</li>
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The article emphasizes the importance of careful planning, testing, and strategic implementation of SCPs to maintain a secure and compliant AWS environment.
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