The directory service that stores information about objects on a network and makes this information available to users and network administrators. Active Directory gives network users access to permitted resources anywhere on the network using a single logon process. It provides network administrators with an intuitive, hierarchical view of the network and a single point of administration for all network objects.
A Microsoft Windows directory service that maintains information about objects connected a network on a server that is called the Microsoft Windows Active Directory server. Active Directory makes it so network users can log on once to use resources (for which they have been granted access) anywhere on the network. A Policy Manager can import the users from an Active Directory server.