01Inventory the dependencies people rely on
Map the application, scheduled work, interfaces, reports and users affected by the proposed change. Identify undocumented file exchanges and manual workarounds. Ask the operating team which output would be missed first if a dependency stopped.
02Choose a migration boundary
Compare upgrading, isolating a component, changing infrastructure and replacing an application. Define the data and behavior that must remain consistent. A smaller boundary can make testing and recovery more understandable than moving every dependency at once. Working example: A compatibility matrix and release runbook.
03Rehearse reconciliation and recovery
Use a representative copy to test data migration, permissions and key transactions. Agree checks that explain whether the target is correct and a recovery decision point. A backup is necessary preparation, but the release plan also needs a workable restoration or rollback path. For research-to-product knowledge handoffs, agree how research, product management and engineering contribute where those functions are involved.
04Leave an operating model behind
Agree responsibility for access, deployments, monitoring, costs and support. Document how environments differ and how changes are approved. Modern infrastructure is only useful when the responsible team can understand and maintain it after the handover. Review check: Recovery conditions account for schema and application changes together.