Step 2. Select Your Topology
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
This section presents examples of Office Communications Server topologies designed to provide IM and conferencing functionality and other features of Office Communications Server ranging from a very small or pilot deployment up to a large global deployment. These topologies are provided as sample deployments; depending on your specific requirements, you can combine different pieces of these topologies to meet your needs. They are presented in order of complexity and size:
Small to Medium Deployment. Scenarios presents topologies appropriate for small or pilot deployments where high availability is not a requirement. These topologies build upon Standard Edition server to support internal IM and conferencing a user base of less than 5,000.
Centralized Enterprise Deployment. Scenarios presents topologies that provide high availability and support for user population of over 5,000 for organizations in a single physical site.
Global Deployments presents topologies that span multiple sites and provide high availability and scalability.