Data migration vendor selection is the decision that determines whether a systems integrator actually protects your data’s integrity through the move, or simply transfers your existing data problems — unvalidated records, undocumented business rules, inconsistent formats — onto a new, more expensive platform. The right vendor is chosen on migration methodology and data governance discipline, not just technical familiarity with the source and target systems.
Why Technical Expertise Alone Isn’t Enough
Most RFP processes for migration vendors focus heavily on platform certifications and prior project experience with the specific systems involved, which matters but isn’t sufficient. A vendor can be deeply expert in, say, an ERP platform and still run a migration poorly if they don’t have a rigorous approach to data profiling, validation, and reconciliation. The projects that go wrong are rarely wrong because the vendor didn’t understand the target system — they’re wrong because nobody validated that what moved matches what existed, until users start finding discrepancies in production.
What to Actually Evaluate
Ask vendors to walk through their data validation and reconciliation methodology in detail, not just their project plan — specifically how they prove, record by record and field by field, that migrated data matches source data, and what tooling they use to do it at scale rather than by sampling. Ask how they handle data quality issues discovered mid-migration: do they have a defined remediation process, or does “fix it as we go” mean undocumented decisions get made under deadline pressure? Request references specifically from projects of comparable data complexity and regulatory sensitivity, not just comparable platform type — a vendor experienced in migrating simple transactional data isn’t automatically equipped for a migration involving regulated personal information under POPIA. Finally, clarify ownership of rollback and contingency planning before signing: a vendor without a clear answer for “what happens if the cutover fails” is a vendor who hasn’t run enough migrations that actually went wrong.
Structuring the RFP Around These Priorities
A migration RFP should require vendors to detail their data profiling approach, validation and reconciliation methodology, rollback strategy, and governance documentation practices as separate, scored sections — not buried inside a general technical approach narrative. This forces an apples-to-apples comparison on the factors that actually predict project success, rather than letting vendors differentiate purely on price or platform credentials.
Agilus runs data migration engagements with this discipline built in from the start — data profiling before a cutover plan is even finalized, field-level reconciliation rather than spot-checking, and documented rollback planning — and is also available to help enterprises structure and evaluate an RFP when the migration itself will be run by another systems integrator.
FAQ
Should migration vendor selection prioritize cost or methodology?
Methodology, specifically around data validation and reconciliation — a lower-cost vendor without rigorous validation practices typically costs more in the end through post-migration remediation and data trust issues.
What’s a red flag during vendor evaluation?
A vendor who can’t describe a specific, repeatable reconciliation methodology — if validation sounds like “we’ll check the data looks right,” that’s a sign the process isn’t mature enough for a complex enterprise migration.