A Microsoft 365 migration without a plan is a recipe for disaster

ShareGate’s migration assessment shows how big your Microsoft 365 move is and what could slow it down, before you commit to a date or a quote. Connect your source tenant and ShareGate counts your users and adds up your SharePoint, OneDrive and Teams storage. It flags the things that usually surprise people on migration day: teams with no owner, inactive sites, huge OneDrives and guest accounts. Then it gives you an overall risk level and a recommended order for the move. Every list exports to CSV. Mailboxes, file shares and Google Workspace aren’t assessed today.

Any ShareGate customer can run a migration assessment, including during a trial. A Microsoft 365 admin (Global admin or Privileged Role admin) approves ShareGate’s access once. After that, ShareGate only reads your tenant, so nothing changes while you look. There’s nothing to install: it runs in ShareGate’s web app. The first scan can take several hours on a large tenant. Then the data refreshes about every 24 hours, stored in North America or Europe depending on your workspace

No. ShareGate's migration assessment only reads your source tenant. It never moves anything. What you get is a plan built from your own data, with a risk level and a recommended order for the move. When you're ready, ShareGate's desktop app does the moving: users, mailboxes, OneDrives, sites and Teams. Each copy is tested before it runs and ends with its own report.

With ShareGate’s migration assessment, you skip the detective work. No chasing every department, no PowerShell scripts, no clicking through admin centers. Connect the source tenant once and ShareGate builds the inventory for you: users, SharePoint, OneDrive and Teams, in one place, with lists you can filter and export. It flags what will slow the move and refreshes about every 24 hours. And the same vendor runs the migration, so your scope doesn’t get rebuilt in a second tool.

Yes, you can run it free during ShareGate’s 15-day trial: every feature, no credit card. The trial covers one tenant. Buy ShareGate and that assessment stays with you, so nothing you found is lost. You can then run a second assessment on another source, for your next migration project.

Partners use ShareGate’s migration assessment to size a prospect’s tenant before the deal is won, and walk into the first meeting with answers instead of questions. Once the client’s admin approves read-only access, you see their users and their SharePoint, OneDrive and Teams volume, plus what will slow the move. Your quote rests on the real tenant, not a guess. And discovery runs the same way at every client.

Planning takes you from “his big is it”, to how complex it is and how should I handle it”? It rates the complexity level of the migration, what’s driving the complexity and recommends the appropriate migration sequence.