Exchange Migration Tool

The Exchange Online Migration Tool helps IT admins and MSPs plan migrations by translating goals into a concrete migration plan. It collects inputs such as mailbox_count, total_data_gb, source_tenant, destination_tenant, and cutover_strategy, then outputs a timeline, resource forecast, and risk indicators.
Conceptually, the tool reasons about capacity, network constraints, and change windows to compute downstream parameters: expected downtime, sequence of phases (pilot, mailbox move, validation), required personnel, and checklists. Required inputs vs optional constraints are clearly distinguished, and defaults are used where data is missing.
The tool provides value by reducing uncertainty, enabling predictable migrations, and supporting governance. Use cases include tenant mergers, departmental consolidations, and cross-geo re-homing. Differentiators include integrated readiness scoring, explicit downtime estimates, and exportable plans for change-management processes. It adheres to enterprise scale and regional compliance considerations, and it handles error conditions by marking missing or inconsistent inputs as warnings rather than failing the calculation.