LDAP (Lightweight Directory Access Protocol) Server is a protocol used for accessing and managing information directories. It is a type of directory service that allows users to access and manage information from different directories on a network. LDAP servers store information about users, groups, and computers on a network and can be used to authenticate and authorize access to network resources such as printers, files, and applications. An LDAP server can also be used for authentication and authorization in applications such as email clients, web browsers, and other networked applications.