LDAP (Lightweight Directory Access Protocol) is a directory service protocol and is used to create, manage and query directories where users, groups, devices and other data are stored in a centralized database. LDAP is used to provide authentication, authorization and other directory services, especially in large organizations and networks.

Authentication, directory management, authorization, address book service, and centralized identity management are features that enable organizations to use LDAP to organize and strengthen user identities, access rights, and communication data.