Best for
- Moving data between systems without losing any
- Major version upgrades that touch everything
- Replacing a component the business depends on
What you give it
- What is moving, from where to where, and what absolutely must not break
- Your tolerance for downtime and your rollback expectations
What you get back
- A staged plan where every stage is verifiable and most are reversible
- A rehearsal procedure that proves the plan before production feels it
- Verification queries/checks that prove completeness, and a written rollback per stage
How it works
- Inventories what exists at the source — including the dirty data nobody mentions.
- Maps source to target explicitly, surfacing every field with no clean home.
- Stages the move so each step is small, checked and — wherever possible — reversible.
- Insists on a rehearsal against a copy, with reconciliation that counts everything.
- Writes the rollback per stage BEFORE execution, including the stage where rollback stops being possible — loudly marked.
Example
You: We are moving customer records from the old CRM to the new platform. 40,000 records, no data loss acceptable.
Result: Five stages: field mapping signed off, a rehearsal on a copy with reconciliation counts, a dual-write window, the cutover with verification queries, and the old system kept read-only for a defined period — rollback written for each stage.
Limits — please read
- It plans and verifies; the business decision to accept a risk window is yours.
- Unknown source data quality is the classic surprise — the inventory stage exists to find it early.
- Zero-downtime is a design constraint, not a default; ask for it and the plan changes shape.