Using Lync Online with a Mac

This TechNet post talks through how to get a Mac going end to end with Office 365:

http://blogs.technet.com/b/neiljohn/archive/2011/09/15/office-365-with-mac-os-x-lion-microsoft-office-2011-and-lync-2011-for-mac.aspx

At this stage the download of the Microsoft Lync for Mac 2011 client is only available through the Volume Licensing Service Center, we expect that at some point it will be available through the Office 365 portal.

There have also been reports about having difficulties getting the client to sign in, so if you are experiencing the same issue this page may help:

http://blogs.technet.com/b/toml/archive/2011/10/11/lync-for-mac-failing-to-sign-in-to-office-365.aspx