Office 365 – Microsoft Office 365 Deployment Readiness Tool beta

The Office 365 Deployment Readiness Tool provides analysis of your on-premises environment in preparation for an Office 365 enterprise deployment. The readiness tool is integrated with the guidance provided in the web edition of the Microsoft Office 365 Beta Deployment Guide.

http://community.office365.com/en-us/f/183/p/2285/8155.aspx