When Authentication Services integrates Unix with Active Directory it provides benefits such as centralized access control and password policy enforcement. However there are situations where security policies dictate a stronger level of authentication.
Authentication Services solves this challenge by including strong authentication capabilities at no extra charge through Quest Defender. Customers get the unique benefit of using the same solution for integrated AD authentication and strong authentication as driven by security requirements. Without these capabilities organizations that have tighter security requirements are forced to implement/purchase a third-party solution.