1. Modify common attributes of multiple user objects at one time.

2. Drag-and-drop one or more objects to a desired location in the domain hierarchy to move Active Directory objects from container to container.

3. Search functionality is object-oriented and provides an efficient browse-less search that minimizes network traffic associated with browsing objects.

4. Save commonly used search parameters for reuse in Active Directory Users and Computers.

5. Active Directory command-line tools.
6. Create instances of several common classes, including country or region, person, organizationalPerson, groupOfNames, device, and certificationAuthority in the base schema of a Windows Server 2003 forest.

7. By Application directory partitions we can configure the replication scope for application-specific data among domain controllers

8. Add additional domain controllers to existing domains using backup media.

9. Universal group membership caching method prevent the need to locate a global catalog across a wide area network (WAN) during logons by storing user universal group memberships on an authenticating domain controller.

10. Rename domain controllers

11. Rename any domain running Windows Server 2003 DCs. we can change NetBIOS name or DNS name of any child, parent, tree or forest-root domain.

12. Create a forest trust to extend two-way transitivity beyond the scope of a single forest to a second forest.

13. Move existing domains to other locations in the domain hierarchy.

14. Defunct schema objects. Deactivate unnecessary classes or attributes from the schema.