CartMicrosoft Teams Pre-Migration Planning
Microsoft Teams pre-migration planning converts the discovery findings into an executable migration design. It defines the Team sites in scope, target readiness, workload boundaries, Microsoft Entra setup, source-to-target mapping, migration waves, incremental strategy and validation process before production data is moved.
The EdbMails Teams workflow already includes the main preparation stages for source and target tenants, including administrator access, app registration, Team-site readiness, site loading and mapping preparation.
Define the Teams migration scope
Confirm exactly which Team sites are moving. Separate broad Team-site migration from Channel Migration and Private/Group Chat Migration so each workload follows the correct EdbMails workflow.
Prepare the destination Team sites
Verify that the intended target Team sites exist or can be created through the documented process.
Resolve naming, structure and ownership differences before migration starts.
Prepare Microsoft Entra application registration
Complete the required Source and Target Microsoft Entra app registrations for the workload being migrated. Do not mix Teams/Channel app registrations with the separate Private/Group Chat app registrations.
Confirm administrator access
Make sure the required Microsoft 365 administrator accounts can access the source and target Team sites in scope and that the SharePoint server and Admin Center URLs are available.
Design source-to-target mapping
Prepare the expected site mapping before production migration. Review automatic mappings and identify Team sites that require manual mapping because of renamed or restructured destinations.
Design migration waves
Group Team sites into manageable batches based on business unit, priority, workload size or project schedule. Leave time between waves for log review, target validation and exception remediation.
Plan for ongoing source changes
If users remain active in source Teams, include a later incremental pass. Preserve the same migration computer for previously migrated Team sites where required by the documented local incremental metadata process.
Define validation and acceptance criteria
Before migration begins, define how each wave will be accepted.
Include migration-log review, representative Team-site validation, user-access checks and workload-specific validation where Channels or Chats are part of the broader project.
Prepare the pilot
Select representative Team sites and run a pilot before the main migration waves. Record any changes to mapping, target preparation or operating procedure so production migration uses a tested configuration.
Frequently Asked Questions
What is Microsoft Teams pre-migration planning?
It is the stage that converts discovery findings into an executable migration design, defining the Team sites in scope, target readiness, workload boundaries, Microsoft Entra setup, mapping, waves, incremental strategy and validation before production data moves.
How is pre-migration planning different from the assessment?
The assessment discovers the environment, while pre-migration planning turns those findings into the design, including scope, mapping, authentication, waves and validation.
How do I define the Teams migration scope?
Confirm exactly which Team sites are moving and separate broad Team-site migration from Channel migration and Private or Group Chat migration so each workload follows the correct EdbMails workflow.
How do I prepare the destination Team sites?
Verify the intended target Team sites exist or can be created through the documented process, and resolve naming, structure and ownership differences before migration starts.
How do I prepare Microsoft Entra application registration?
Complete the required source and target app registrations for the workload being migrated, and do not mix Teams and Channel app registrations with the separate Private or Group Chat app registrations.
What administrator access is required?
Ensure the required Microsoft 365 administrator accounts can access the source and target Team sites in scope and that the SharePoint server and Admin Center URLs are available.
How do I design the source-to-target mapping?
Prepare the expected site mapping before production migration, review automatic mappings and identify Team sites that require manual mapping because of renamed or restructured destinations.
How do I design migration waves?
Group Team sites into manageable batches by business unit, priority, workload size or schedule, leaving time between waves for log review, target validation and exception remediation.
How do I plan for ongoing source changes?
If users remain active in source Teams, include a later incremental pass and preserve the same migration computer for previously migrated Team sites where required by the documented process.
How do I define validation and acceptance criteria?
Decide up front how each wave will be accepted, including migration-log review, representative Team-site validation, user-access checks and workload-specific validation where Channels or Chats are involved.
Why prepare the pilot in advance?
Running a tested pilot means production migration uses a verified configuration for mapping, target preparation and operating procedure rather than assumptions.
