Active Directory (AD) is a directory service developed by Microsoft for Windows domain networks. Windows Server operating systems include it as a set of processes and services. Originally, only centralized domain management used Active Directory.

Active Directory (AD) is a database and set of services that connect users with the network resources they need to get their work done. The database (or directory) contains critical information about your environment, including what users and computers there are and who’s allowed to do what.

Active Directory is a directory service or container which stores data objects on your local network environment. The service records data on users, devices, applications, groups, and devices in a hierarchical structure. The structure of the data makes it possible to find the details of resources connected to the network from one location.

Active Directory (AD) is a live directory run on a Microsoft Windows server that stores account login data and information administrators need to manage permissions and access to network resources.

Active Directory (AD) is a Microsoft technology used to manage computers and other devices on a network. It is a primary feature of Windows Server, an operating system that runs both local and Internet-based servers.