Apache Directory Server, OpenLDAP and MS Active Directory are the examples of lightweight directory access protocol (ldap) directory server software.
Active Directory (AD) is a directory service that runs on Microsoft Windows Server. The main function of Active Directory is to enable administrators to manage permissions and control access to network resources. In Active Directory, data is stored as objects, which include users, groups, applications, and devices, and these objects are categorized according to their name and attributes.
Active Directory Domain Services (AD DS) are a core component of Active Directory and provide the primary mechanism for authenticating users and determining which network resources they can access. AD DS also provides additional features such as Single Sign-On (SSO), security certificates, LDAP, and access rights management.
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