A quick history of Lync
If you’ve been around Exchange long enough, you might remember that Exchange 2000 included its own instant messaging and conferencing server. As far back as the late 1990s, it was clear that real-time communications in the form of instant messaging (IM) and conferencing was a natural complement to the asynchronous world of email. The Exchange 2000 IM and conferencing products never gained any traction in the marketplace, and Live Communications Server (LCS), which made its debut in 2003, replaced them. LCS 2003 implemented presence using a protocol known as SIMPLE, a set of extensions to the Session Initiation Protocol (SIP) described in Chapter 6.
In 2005, LCS was upgraded to LCS 2005 and included more web conferencing ...
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