This article provides best practices for implementing AWS Control Tower controls to establish effective governance and compliance in multi-account AWS environments.

• Understand workloads and OUs before applying controls to ensure proper scoping
• Align controls to IT compliance frameworks like NIST 800-53, CIS, or PCI-DSS
• Learn control behaviors: preventive (SCPs), detective (Config Rules), proactive (CloudFormation)
• Deploy detective controls first to identify gaps before enabling preventive controls
• Test controls in non-production environments before production deployment
• Continuously monitor controls using CloudTrail, Audit Manager, and IAM Access Analyzer
• Adopt policy-as-code strategy with peer review for consistency and automation
• Enable defense-in-depth approach combining all three control types
• Automate detection and remediation using Systems Manager Automation
• Create custom controls via SCPs, Config rules, and conformance packs as needed

Following these practices streamlines governance, accelerates service adoption, and reduces time to establish compliance frameworks in AWS environments.