A company wants to deploy a continuous security threat-detection service at scale to automatically analyze...

A company wants to deploy a continuous security threat-detection service at scale to automatically analyze all the company's member accounts in AWS Organizations within the ap-east-1 Region. The company's organization includes a management account, a security account, and many member accounts. When the company creates a new member account, the threat-detection service should automatically analyze the new account so that the company can review any findings from the security account.

Which solution uses AWS security best practices and meets these requirements with the LEAST effort?