1: Domains can be renamed or moved to a different level in the AD tree

2: It supports IPV6 and XML Web services.

3: A new concept of Volume Shadow copy which will takes periodic Snapshots of harddisk.

4: IIS has ability to keep worker process from diffrernt website and web application separated.so that if one application crashes other websites running on the same server remains unaffected.

5: Task Manager has two extra tabs,One showing the graph of network usage per adapter and other showing details of connected users

6: inorder to reduce piracy,microsoft introduced product activationas in window XP

7: Shutdown event tracker.

8: it supports 32 bit and 64 bit processors.

9: it supports multiprocessor upto 64 numbers,scaleable to 512 GB Ram and 720 Group policies.