Created at 1993 LDAP was created by Tim Howes, Steve Kille and Wengyik Yeong; Based on the X.500 Standard but simply adapting to meet custom specifications.
Lightweight Directory Access Protocol (LDAP) is a standard application protocol for accessing and managing a directory service. It is supported by most vendor directory services, including Active Directory (AD), and facilitates the sharing of information on users, systems, networks, services, and applications with applications and services that need it.
The concept of LDAP is its information model, which handles with information stored in directories and the hierarchical structuring of information. The information model revolves around an entry (user or group, organization …) , which is a collection of fields that are attributed to a user with type and value. Entries are organized in a tree structure called the directory information tree. The entries are composed around real world concepts, organization, people and objects. Attribute types are associated with syntax defining allowed information. An attribute in its singularity can enclose multiple values/fields init.
