Active Directory (AD) Glossary Definition

Active Directory (AD) is a directory service that Microsoft developed for Windows domain networks. It is included in most Windows Server operating systems as a set of processes and services.

See also: AD.

In security and compliance work, this term helps teams describe controls, risks, identity practices, standards, audits, or protective technologies. It is relevant when managing access, reducing exposure, documenting safeguards, or demonstrating accountability.

Related concepts include Identity and Access Management, Windows Server and Group Policy.