Office Communications Server 2007 provides two management interfaces out of the box. The Admin Tools MMC offers a graphical user interface (GUI) based on the Microsoft Management Console that integrates with the Windows management infrastructure. The Windows Management Instrumentation (WMI) layer exposed by Office Communications Server 2007 provides a scriptable interface that administrators can use to automate tasks. This WMI interface provides more flexibility and access to additional settings that might not be exposed at the MMC interface. Office Communications Server settings are in three different locations. Global settings are stored in Active Directory. Pool-level settings are stored in a SQL database, and settings specific to a server are stored in the local WMI repository on the server. WMI exposes all these settings in a consistent way by abstracting their storage location. Because of this, administrators do not need to use a different set of API calls depending on where the settings are stored—such as LDAP or ADSI to query Active Directory, structured query language to access the SQL database, and WMI APIs to query the WMI repository.

Migrating users from Live Communications Server 2005 to Office Communications Server 2007 is a straightforward process. By using the Move Users Wizard, administrators can easily migrate those users. As a safety precaution, migrated users are not automatically enabled for enhanced presence. Administrators can decide if and when to enable enhanced presence by running the Configure Users Wizard, such as when all users have migrated to Office Communications Server 2007 or when all user clients are upgraded to a version that supports enhanced presence (Communicator 2007).