Exchange 2010 migration guide: Part 2

Overview

Documenting the rationale and business principles
underlying your migration, carefully recording the details
of the current deployment, and identifying the risks
involved in migration establishes a solid framework for
performing a successful transition to Exchange 2010.

This guide details the best practices to follow when migrating from Microsoft Exchange 2003 to Microsoft Exchange 2010. The guidelines provided explain how to prepare the existing infrastructure for the process, what safeguards should be employed, and how to perform the actual migration.