The part of the directory in charge of managing domains, which was a core part of the operating system, was renamed Active Directory Domain Services (ADDS) and became a server role like others. "Active Directory" became the umbrella title of a broader range of directory-based services. According to Byron Hynes, everything related to identity was brought under Active Directory's banner.
The part of the directory responsible for managing domains within an operating system was renamed Active Directory Domain Services (ADDS) and became a server role like other components. The term "Active Directory" expanded to encompass a broader set of directory-based services, integrating all identity-related functions under its umbrella.