Understanding and Troubleshooting Microsoft Exchange Server Integration with Lync

Understanding and Troubleshooting Microsoft Exchange Server Integration is a great technical whitepaper that covers integration between Lync Server 2010 and Exchange Server 2010

Please note that this document does not cover Microsoft® Lync™ 2010 instant messaging (IM) and Microsoft Exchange Outlook Web Access (OWA) integration. For details, see the following:

Overview
This document introduces you to some of the new client features that are available whenever Microsoft Lync Server 2010 communications software is integrated with Microsoft Exchange Server 2010. Successfully integrating these two enterprise communications solutions can be challenging, especially considering that there are subtle differences in the way that services from each product are leveraged by Lync Server 2010 clients.