Company XYZ finds itself using more cloud-based business tools, and password management is becoming onerous. Security is important to the company; as a result, password replication and shared accounts are not acceptable. Which of the following implementations addresses the distributed login with centralized authentication and has wide compatibility among SaaS vendors?
A . Establish a cloud-based authentication service that supports SAM
C . Implement a new Diameter authentication server with read-only attestation.
D . Install a read-only Active Directory server in the corporate DMZ for federation.
E . Allow external connections to the existing corporate RADIUS server.
Answer: A