Applies to: Exchange Server 2010 SP3, Exchange Server 2010 SP2

Topic Last Modified: 2010-07-29

When you're upgrading your existing Microsoft Exchange Server 2007 organization to Exchange Server 2010, there's a period of time when both Exchange 2007 and Exchange 2010 will coexist within your organization. This section discusses key points about both the upgrade process and coexistence as they apply to the Client Access, Transport, Mailbox, and Unified Messaging server roles. For more information, see the following topics:

Checklist: Upgrading from Exchange 2007

Upgrade from Exchange 2007 Client Access

Upgrade from Exchange 2007 Transport

Upgrade from Exchange 2007 Mailbox

Upgrade from Exchange 2007 SP3 to Exchange 2010 RTM Unified Messaging

For more information about the Exchange 2007 to Exchange 2010 planning and upgrade process, see the following topics:

Exchange 2007 - Planning Roadmap for Upgrade and Coexistence

Understanding Upgrade to Exchange 2010

Managing Deployment of Exchange 2010

Exchange Server Deployment Assistant