Previously Office Communications Server (OCS), which evolved from Live Communications Server, Lync Server uses the address books maintained by Microsoft Exchange Server. Microsoft Lync is the ...

Microsoft's Office Communication Server "14" is now known as Microsoft Lync 2010, and it's due to hit the market by year's end, said Kirk Gregersen, senior director of Microsoft Office product ...

Windows Messenger was the XP counterpart to MSN Messenger, both of which were replaced by Windows Live Messenger and later Skype. See Windows Live Messenger and Microsoft Lync.