The Exchange Deployment Assistant is a Web-based tool that helps administrators plan Exchange Server upgrades and installations.
Introduced with the Exchange 2010 release, administrators log into the Exchange Server Deployment Assistant, also commonly referred to as ExDeploy, on the Microsoft website. From there, they are posed with several yes or no questions regarding the state of their current Exchange Server deployment.
After the questions are answered, the tool compiles a checklist based on the administrator's environment, describing the steps necessary to migrate to Exchange Server 2010, whether he is moving to an on-premises, hybrid or cloud environment. The administrator can print out or save the checklist and check items off as he completes each task specified to complete the migration.
An Exchange Deployment Assistant is currently planned for the Exchange Server 2013 release.