LDAP

LDAP stands for "The Lightweight Directory Access Protocol"

The LDAP (pronounced /ˈɛldæp/) is an application protocol for querying and modifying data of directory services implemented in Internet Protocol (IP) networks. A directory is a set of objects with attributes organized logically in a hierarchical manner.

A simple example is the telephone directory, which consists of a list of names (of either persons or organizations) organized alphabetically, with each name having an address and phone number associated with it.

A directory information tree often reflects various political, geographic, and/or organizational boundaries, depending on the model chosen.

Internet Password
In the European Commission the LDAP credentials are often called as "Internet Password"