Prepare a Comprehensive Deployment Plan

The process of developing a comprehensive Deployment Plan is a valuable exercise that will lead you to consider and accommodate all of the factors likely to influence your organization's migration. Halfway through your deployment is no time to discover that a neglected detail has cost your organization several hundred hours of user productivity, or unnecessary aggravation for your users.

Your Deployment Plan will be an internal document, and as such may be as full of undefined jargon and acronyms as you like. But at a minimum your Plan should accommodate all of the issues identified in this Guide, in Chapter 3, Issues to Address in Planning for a New Mail Server Engaging professional services experienced in messaging migration may prove very beneficial.