Those familiar with Microsoft Unified Communications and how to deploy and configure Microsoft Office Communications Server 2007 are likely familiar with the Edge and Mediation roles. The OCS Edge server allows external or public access to the OCS 2007 resources, and the Mediation server ‘mediates’ between communications protocols, allowing the Microsoft Unified Communications platform to integrate and communicate with other voice protocols. A slightly more obscure role is that of the Director. As Mike Stacey, Director of Services for Evangelyze Communications, points out in his blog, it is not a completely separate installation, like the Edge and Mediation roles, but it can play a valuable role in your Microsoft Unified Communications infrastructure. Check out Mike’s blog post (The OCS Director – Reasons, Benefits and Dependencies) to learn more.