Microsoft Unified Communications technologies can help your business integrate telephone-based tasks such as phone calls, voicemail and conferencing with computer-based tasks such as documentation, spreadsheets, instant messaging, email and calendars. It's simple, streamlined and highly scalable. And we call it Unified Communications.
Back in the world of software, we have Microsoft's entry in the firewall market. Microsoft Internet Security and Acceleration Server (ISA Server) is a fully-featured firewall with a number of bells and whistles that add considerable functionality and security.