Divestitures and tenant splits
Separate a business into its own tenant on the deal's timetable.
A divestiture sets hard dates: Day 1, the transitional services agreement and its exit. The business being sold needs its own identities, data and devices, and the seller needs to keep what stays. We plan the separation against those dates and exit the TSA cleanly.
Start with tenant migration readiness
What a split involves
- A Day 1 separation plan: what changes on the day and what continues under the TSA
- Data scoping: which mailboxes, sites, Teams and files go with the business, and which stay
- Identity separation: new accounts in the new tenant, with sign-in planned for the day
- Device separation: devices moved to the new tenant's Intune, or reset
- Legal hold and eDiscovery obligations preserved on both sides
- A new tenant built to a secure baseline before anything moves into it
- A clean TSA exit, with access between the businesses removed on the agreed date
How it runs
- Plan: deal dates, TSA terms and data scope confirmed with both parties, and the Day 1 plan agreed.
- Build: the new tenant set up with identity, security, Intune and Purview baselines, as code.
- Separate: data and identities moved in waves, with coexistence between the tenants during the TSA.
- Devices: re-enrolled or reset into the new tenant.
- Exit: cross-tenant access removed, remaining TSA services ended and evidence of separation provided.
Data scoping is the hard part
Shared mailboxes, SharePoint sites used by both businesses and Teams with mixed membership need decisions before migration, and some content needs legal review. We produce the scoping register early, so the people who own those decisions have time to make them.
Legal hold and records
Content under legal hold or retention must stay preserved, and sometimes has to be kept in both tenants. We map holds, retention policies and eDiscovery cases before anything moves, and agree with legal how each is handled.
Questions buyers ask
Who do you work for in a divestiture, the buyer or the seller?
Either, and sometimes both under a clear agreement. The plan protects what stays with the seller and gives the divested business a clean start.
What is a TSA, and why does it matter here?
A transitional services agreement is where the seller keeps providing services for a period after the sale. The migration plan has to finish before the TSA ends, or the TSA has to be extended.
Can the new business keep its email domain?
Usually, if the domain goes with the business. Domains can only be verified in one tenant at a time, so the move is planned for a specific window.
What if the deal date moves?
The plan is built from the dates, so a change moves the waves in a known way. We show you the impact on the TSA exit straight away.
Can you run the new tenant after separation?
Yes. The divested business can take Managed Microsoft 365 and security from Day 1, including a service desk for its users.
Start a conversation
Separate on the deal's timetable.
Tell us the Day 1 date and what goes with the business.
Talk to an Engineer