The Google Apps Technical Transition Guide outlines the typical process for transitioning to Google Apps from another messaging platform (such as Microsoft Exchange). It outlines two transition strategies: one for companies below 400 employees, and another for larger companies.

You'll understand the major steps for migrating each of the components of your legacy system, including user accounts, mail, calendar data, and mobile devices. You'll also learn the approximate level of effort—low, moderate, or high—required for each step. Links to the definitive documentation resources for each step are included, so you'll know exactly what to do when the time comes.

This guide is for you if any of the following applies:

• You'll be helping your company transition to Google Apps from another messaging platform (such as Microsoft® Exchange).
• You're curious about making the switch to Google Apps and want to learn more about the transition process before deciding.