LDAP is the most widely used protocol for accessing directory services. It can be used to rapidly retrieve information in a variety of objects such as Groups, Locations, Organizations, and People.
The LDAP connector makes it possible to surface content from LDAP directories into a single consolidated search index, along with content from other repositories. The connector works with SharePoint Search, Azure Cognitive Search, Elasticsearch, AWS Elasticsearch, and Solr.
The LDAP Connector enables you to index Directory information from multiple LDAP-compliant Directory Services including Active Directory, OpenLDAP, OpenDJ and ViewDS.