Advanced Multi-Account Security Auditing with AWS Control Tower and Custom Lambda Automation

In a multi-account AWS environment, ensuring consistent security and compliance can quickly become a complex endeavor. As organizations scale, they often distribute workloads across multiple AWS accounts to isolate environments, manage billing boundaries, and enforce the principle of least privilege. While AWS Control Tower simplifies the initial setup of a governed, multi-account structure through pre-configured landing zones and guardrails, maintaining visibility and enforcing compliance across these accounts requires more than the built-in tooling alone.