Since Active Directory is at the center of many organizations’ identity and access management strategies, migrating NIS authentication to AD is a highly attractive option. Authentication Services is the pioneer, market leader, and ongoing innovator in this space. Quest was the first to offer an Active Directory-based alternative to NIS with patented technology and continues to lead with the most robust set of NIS migration options and the most powerful collection of capabilities to facilitate the migration and manage NIS data. Authentication Services: