Scope a Microsoft 365 tenant migration around mail flow, shared data, identity and user validation.
Map what needs to move
List users, domains, shared mailboxes, groups, SharePoint sites, OneDrive data and applications that send mail. Assign an owner to each dataset and confirm whether permissions and historical data need to move.
Run a representative pilot
Include users with large mailboxes, mobile devices, delegated access and shared documents. Verify sign-in, meeting invitations, file links and external sharing. Record which items need a manual fix.
Define cutover and rollback
Set the change window, DNS ownership, communication plan and escalation contacts. Agree on who validates inbound and outbound mail, document access and critical application workflows before closing the change.
Request a migration scoping call
Share user count, source and destination environments, and your preferred cutover window.