TENANT-TO-TENANT MIGRATION —
COST ESTIMATOR (AUD).

Three common scenarios. Mergers and acquisitions — acquiring an organisation usually involves consolidating two tenants into one. Divestitures — the reverse, splitting a tenant when a business unit is sold. And rebranding or jurisdiction changes — for example moving from a parent company's global tenant into a standalone AU tenant. Frontrow runs all three patterns across AU mid-market and enterprise tenants.

Per-user vendor tool cost (BitTitan MigrationWiz, Quest On Demand Migration, ShareGate, CodeTwo), Frontrow services delivery (project management, identity prep, comms, runbooks, cutover, post-cutover support), total project duration in weeks, and risk flags based on scope and configuration. Inputs are users, mailbox/OneDrive size, SharePoint volume, Teams scope, retention, complexity and cutover style.

Below 300 users, BitTitan MigrationWiz or CodeTwo are the typical choice — per-user one-time licences, simple model, good mailbox and OneDrive coverage. SharePoint-heavy migrations pair ShareGate alongside for the content work. Above 1,000 users, Quest On Demand Migration becomes more compelling for the identity coordination depth. There is no single winner; the migration plan typically pairs two tools for different workloads.

Phased is the default for any tenant above 200 users. Big-bang carries material operational risk — every problem surfaces simultaneously, no rollback, no time to learn. Phased migrations move 10–25% of users per wave with a 2–4 week stabilisation between waves. The exception is small tenants (under 200 users) or hard regulatory cutover deadlines where phased isn't workable.

Three things. First, Microsoft 365 licensing overlap during the migration window — typically 4–8 weeks of dual licensing on the destination tenant. Second, third-party app integrations — single sign-on configurations, OAuth grants, custom Graph integrations need re-wiring in the destination and rarely show up in vendor tool scope. Third, end-user training — Teams chat reset, OneDrive resync, Outlook profile recreation; affordable but operationally disruptive if not communicated in advance.

It produces a defensible range, not a fixed quote. AUD ranges are based on 2026 vendor list prices; volume discounts of 15–35% are typical at 500+ users (Frontrow negotiates these directly). Frontrow services scale by users, complexity and cutover risk; the range covers fully-managed vs internal-IT-led delivery. The duration range covers typical AU mid-market migrations; specific industries (legal, healthcare, finance) may add 2–4 weeks for regulatory review.

Yes, in the services component. Entra ID coordination — directory sync, Conditional Access policy mirroring, Intune device re-enrolment, sensitivity-label mapping, mailbox permissions reconstitution — is included. Hybrid identity (on-prem AD continuing to sync to a new tenant) is treated as 'complex' for the scope and can extend timeline.

Daniel Brown (5x Microsoft MVP, Frontrow AI Lead), Graeme Lodge (Managing Director), and Sam Williams (Investor & Executive Consultant). The cost model is calibrated against Frontrow Technology's delivery experience across Australian mid-market and enterprise tenant-to-tenant migrations.