Horton Scientific

Interactive planning tool

Tenant-to-Tenant Migration Timeline Estimator

Estimate the planning complexity of a Microsoft 365 tenant move based on users, workloads, identity, data, coexistence, and deadline constraints.

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Score the current state

Score the conditions that drive sequencing and planning effort

This tool estimates relative complexity, not calendar duration. A timeline requires source data, workload scope, migration throughput, business constraints, and validation responsibilities.

How many users are moving?

Include active users, shared mailboxes, guests, and external collaboration needs.

How many workloads are in scope?

Mail, OneDrive, SharePoint, Teams, groups, devices, apps, and Power Platform each add sequencing requirements.

How complex is identity?

Consider domains, Entra ID, synchronization, Conditional Access, MFA, devices, and administrative roles.

How much data is involved?

Storage volume affects tool selection, wave sizing, throttling, and validation.

Is coexistence required?

Mergers, acquisitions, and divestitures may require mail routing, address book, collaboration, and staged cutover decisions.

How fixed is the deadline?

Legal, brand, acquisition, contract, or operational dates can reduce flexibility.