Lync Server 2010 Packaging, Pricing, and Licensing

Lync Server 2010, as with its predecessor, Communications Server 2007 R2, requires purchase of server licenses and Client Access Licenses (CALs). However, Lync Server uses three types of CALs instead of two, changes some functions covered by the different CAL types, and introduces detailed rules regarding Software Assurance license entitlements. While the product makes significant improvements to conferencing and upgrades its voice capabilities to the point where it can replace private branch exchange (PBX) phone systems, the overall per-client cost of premium features has gone up for new customers. Lync Server 2010 also requires licensing recent versions of various prerequisite products.

Lync Server enables users to view and publish presence status (for example, online, busy, or away) and initiate various types of communications sessions, including instant messaging (IM), voice, video, and application sharing. It also enables Web conferences, structured online meetings that typically include a synchronized PowerPoint presentation and an audio feed to attendees, and can include other features such as chat sessions for question and answer and application sharing. Lync Server works with several types of clients, of which the Lync 2010 PC client is most important.