Workbook tabs to createExecutive summary: driver, deadline, success criteria, risk tolerance, and decision owners.Tenant inventory: domains, users, groups, licenses, workloads, admin roles, and security baselines.Workload scope: Exchange, OneDrive, SharePoint, Teams, Power Platform, devices, apps, and guests.Dependency map: mail routing, identity, Conditional Access, applications, line-of-business systems, and service accounts.Wave plan: pilots, business units, VIPs, shared mailboxes, high-risk workloads, and cutover windows.Validation model: owner signoff, user journeys, support coverage, rollback considerations, and hypercare.Timeline driversUser and data volume, workload scope, identity complexity, coexistence needs, security policies, and validation capacity.Business constraints such as acquisition dates, legal deadlines, finance close, blackout periods, and executive availability.Tooling, throttling, network constraints, and custom automation requirements.
