Microsoft Active Directory is a very important feature in the Windows Server operating the systems, and is the foundation of the Windows domain security systems. Since its initial release, Active Directory has become the standard in enterprise directories. No official number seems to be published, but most professionals who understand the market would agree it is close to 90% in medium to large businesses. Strategy is well integrated with Microsoft Active directory with the capability to authenticate and import users and groups from an existing LDAP Server into the Strategy Metadata.

Useful helpful articles related to configuring LDAP authentication:
KB18562: Understanding LDAP integration with the MicroStrategy Intelligence Server 9.x and newer
KB18579: Steps to take to troubleshoot LDAP integration - connectivity and initial authentication from the MicroStrategy Intelligence Server 9.x
KB18506: Importing and linking users using LDAP integration with the MicroStrategy Intelligence Server 8.1.x and 9.x
KB13041: How to configure LDAP connectivity using SSL authentication with MicroStrategy Intelligence Server 9.x on Windows Operating Systems