Through out my past 5 years experience with talking to people about enterprise security, Microsoft always not in the discussion. This is what mostly happen in Malaysia. Symantec, Netscreen, Nokia Checkpoint, Cisco, Trend-Micro, F5 are the famous name among the local market. However, today I receive a link about Microsoft Forefront Client been installed in Microsoft itself.
You can view the information by clicking the links below
If the software can support up to 40000 clients why not your company if the amounts of client is smaller then that.