This content is no longer actively maintained. It is provided as is, for anyone who may still be using these technologies, with no warranties or claims of accuracy with regard to the most recent product version or service release.
Office Communications Server 2007 supports various server roles including:
Web Conferencing Edge
Audio/Visual Conferencing Edge
Communicator Web Access
Enterprise pool Front End
Enterprise Edition Back-End Database
Third-party applications can be deployed on any or all of these server types, depending on desired functionality. Understanding how each new server role functions is essential to both application design and deployment.