You can deploy a single Edge Server or a load-balanced array of Edge Servers. For details, see Set Up Edge Serversin the Deploying Edge Servers for External User Access documentation.

If you have moved all your users to Office Communications Server 2007 R2, now is the time to confirm that your firewall and the reverse proxy are configured for the internal and external interfaces of the new Edge Server. For details, see Set Up the Infrastructure for Edge Serversin the Deploying Edge Servers for External User Access documentation, Firewall Requirements for External User Accessin the Planning and Architecture documentation, and Configure a Reverse Proxyin the Deploying Edge Servers for External User Access documentation.