This document provides guidance on running an Early Adoption Program (EAP) for the rollout of Office 365. An EAP allows a representative group of users to test the deployment before a full rollout. Key aspects covered include: identifying business scenarios to test, defining success criteria, recruiting participants from across departments, providing training, collecting feedback through surveys and meetings, and using the insights to update the launch plan for the full deployment. The goal is to identify and address any issues before the wider launch.