Use AWS Firewall Manager to create a set of rules based on the security requirements. Replicate the rules to all the AWS accounts and Regions.

Use AWS CloudFormation StackSets to provision VPC security groups based on the specifications across multiple accounts and Regions. Deploy AWS Network Firewall to define the firewall rules to control network traffic across multiple accounts and Regions.

Use AWS CloudFormation StackSets to provision VPC security groups based on the specifications across multiple accounts and Regions. Configure AWS Config and AWS Lambda to evaluate compliance information and to automate enforcement across all accounts and Regions.

Use AWS Network Firewall to build policies based on the security requirements. Centrally apply the new policies to all the VPCs and accounts.