There's a lot of lync 2010 loving happening here, specifically a really nice detailed visio poster. The site also mentions that it's a PDF, but the download (at the moment) is still a Visio, which is great since there's a TON of nice pics I plan on using again and since I'm feeling lazy

, let me quote directly from the download site:

This poster shows each workload in lync Server 2010, describing relationships, dependencies, the servers that initiate connections, and certificate requirements. Relationships between microsoft Lync 2010 communications software, Microsoft Lync 2010 Phone Edition, Microsoft Office Live Meeting 2007, Microsoft Lync Web App, and other communications software are also described. SIP and XMPP connection patterns are shown for Yahoo!, MSN, AOL, gmail, and Jabber.

Here's a bit more detail -

IM and Presence

AV and Web Conferencing

and more….

Grab it while it's still a Visio and enjoy!

Nic