This app extends UCS with Active Directory functionality as it is delivered by the software Samba. It allows to operate an Active Directory compatible domain controller with UCS and therefore provides a login service for Windows systems that are part of the domain.
Users and group memberships are maintained centrally in the UCS management system. Replication mechanisms synchronize the data to other domain controllers.
Further details about this topic can bei found in the manual for users and administrators (see link "Further information").