Every directory user you want to manage through Workspace ONE Express must have a corresponding user account.
Integrating directory service users into Workspace ONE Express users is entirely optional. However, there are many benefits to applying the user data already stored within your directory service.
Integrating the two systems means that you gain the benefit of having the two systems linked. When a user becomes inactive in directory services, their linked user account status and device enrollment in Workspace ONE Express come to an end automatically. User inactivity includes employment termination, retirement, and so on.
Linking the two systems means mapping your directory service user information onto Workspace ONE Express.