Enable AWS CloudTrail organization trails across all accounts and deliver the logs to a centralized Amazon S3 bucket in an audit account. Use Amazon Athena to query the centralized logs and build scheduled reports that auditors can review for evidence of the required security controls.

Enable AWS Security Hub across all accounts. Designate a delegated administrator account to aggregate security findings across the organization. Export Security Hub findings and compliance check results to Amazon S3. Generate periodic compliance reports for auditors.

Enable AWS Config rules in each account to evaluate the required security controls. Deliver configuration snapshots to a centralized Amazon S3 bucket. Use AWS Lambda functions in an audit account to periodically analyze the snapshots and generate compliance evidence reports for auditors.

Enable AWS Config rules across all accounts to evaluate the required security controls. Use an AWS Config aggregator in an audit account to centralize configuration data. Deploy AWS Config conformance packs that are aligned to the required regulatory frameworks. Use AWS Audit Manager to collect evidence and generate audit reports.