A SharePoint Online migration plan should state what will move, where it will live, who will own it, which permissions should survive, and how the customer will accept the result. A file count alone is not enough to choose tooling, promise a cutover date, or price an implementation.
GlobalAdmins provides SharePoint Online migration and architecture consulting. We start with discovery, then agree the supported sources, implementation boundary, validation, and handoff in a written proposal.
1. Define the source and the business decision
Record whether the content lives in an on-premises SharePoint environment, file shares, or another source. Estimate the number of sites or shares, content volume, active users, owners, and target date. Explain the reason for moving: collaboration, a retirement deadline, a new ownership model, or preparation for Microsoft 365 workflows.
Identify custom workflows, integrations, forms, and business-critical links separately. A content move does not automatically recreate the behavior of every source application.
2. Agree destination ownership before moving content
For each proposed destination site or library, name the business owner, expected audience, external-sharing boundary, and review responsibility. Decide which content belongs in a team workspace and which needs a different destination or further review.
Avoid copying an unclear source structure directly into SharePoint Online without an ownership decision. Unresolved content should have an owner and a next action before it is included in a migration wave.
3. Review identities, permissions, and tool compatibility
Check how source users and groups map to destination identities. List intended permissions, broken inheritance, external access, orphaned owners, and exceptions that need business approval. Select tooling after reviewing the source and requirements.
Microsoft's Migration Manager overview describes file-share migration, source and destination access, prescans, and reporting. That guidance helps establish prerequisites; it does not prove that every customization, workflow, or permission in a particular environment will migrate unchanged.
4. Pilot a representative sample
Choose a small sample that includes ordinary content and the difficult cases you already know about. Agree the test before the transfer: which files and metadata should be present, who should be able to open them, which links or workflows need checking, and how exceptions will be handled.
| Validation area | Customer acceptance question |
|---|---|
| Content and metadata | Is the agreed sample present, complete, and usable? |
| User access | Can intended users reach the destination, and are unintended users excluded? |
| Links and dependencies | Which links, forms, integrations, or workflows need adjustment? |
| Reporting | Are transfer failures, skipped items, and exceptions recorded with owners? |
| User readiness | Do the affected teams know where to work and where to report an issue? |
Do not treat a successful transfer job as customer acceptance by itself.
5. Define cutover, exceptions, and handoff
Agree migration waves, a change window, source and destination responsibilities, acceptance reviewers, and the response if a validation check fails. Document what happens to late source changes and which decision would stop a wave.
The operating handoff should identify the new owners, unresolved exceptions, access reviews, and the process for subsequent changes. Scope and dates depend on the source assessment and actual delivery capacity.
How does migration relate to Copilot readiness?
Migration and Copilot readiness can share an ownership and permissions foundation, but they answer different questions. Migration checks the agreed move and destination. A Copilot data-exposure assessment reviews the content and sharing paths pilot users can reach before wider rollout.
If Copilot is part of the next step, use the permissions review checklist and Microsoft's secure and governed deployment guidance. Confirm the available controls against the actual tenant and licenses.
What to send for the first consultation
Provide the source platform, approximate site or file volume, business sponsor, important dependencies, and desired timing. A representative inventory is enough to start scoping. Do not send credentials or sensitive files through the inquiry form.
Request a SharePoint migration consultation to agree the discovery boundary and next decision.