Before you set a cutover date, confirm each of the following. Skipping any one of these is the most common root cause we see in failed or delayed migrations.
- Source data has been deduplicated and validated against known business rules.
- A field-level mapping document exists and has been signed off by someone who understands both systems.
- A rollback plan has been written down and tested, not just assumed.
- A freeze window for source-system changes has been communicated to every team that touches the data.
- Post-migration validation queries are written before cutover, not improvised after.
Our Data Analytics & BI and Cloud Migration teams use this checklist as a gate before any cutover is scheduled.