A company has asked a Solutions Architect to design a secure content management solution that can be accessed by API calls by external customer applications. Th...

A company has asked a Solutions Architect to design a secure content management solution that can be accessed by API calls by external customer applications.
The company requires that a customer administrator must be able to submit an API call and roll back changes to existing files sent to the content management solution, as needed.
What is the MOST secure deployment design that meets all solution requirements?