Data migration moves records into a new system. Microsoft describes a migration approach that uses an intermediate staging database to prepare, transform and validate data before loading the destination. This is one documented method, not a requirement to use that architecture for every project. Source: Microsoft: data migration through a staging database

A travel example

Imagine moving customer records and future bookings into a replacement agency system. A useful acceptance test would open a booking in the destination and check its travellers, supplier reference, balance and documents against the agreed source record. This is an example of testing meaning, not just counting imported rows.

Decide the scope first

List what must move, what can remain in an accessible archive and what should be removed under your retention policy. Give every field an owner and a destination. Resolve duplicate customer records before deciding how the new system should link their bookings.

Plan the final changeover

We recommend a rehearsal, an agreed point for capturing final changes and a fallback plan. Record who checks the results and who authorises the switch. These steps make the acceptance decision reviewable and help the team identify gaps before the old system is retired.

Written and updated by Travelgenix. Sources checked on 16 October 2026. Worked examples and checklists are editorial illustrations and recommendations, not customer results.