When every provider receives a different picture of the estate, their proposals cannot be compared. One may assume automated conversion, another may include months of rediscovery, and a third may quietly exclude the hardest integrations. The prices look different because the work is different.
Establish a shared baseline
A vendor-ready brief should give every qualified provider the same view of:
- business outcomes, decision constraints, and non-negotiable behavior;
- source platforms, languages, repositories, data stores, jobs, and interfaces;
- recovered rules, dependency concentrations, domain boundaries, and confidence levels;
- security, residency, regulatory, availability, and cutover constraints;
- preferred modernization dispositions, alternatives considered, and unresolved questions.
Ask for assumptions in a common structure
Providers should identify what they validated, what they inferred, what they excluded, and what would change the estimate. They should also explain their approach to behavior validation, data reconciliation, coexistence, rollback, observability, and knowledge transfer.
Score fit, not presentation quality
A strong evaluation model weights source-estate depth, target fit, transformation method, delivery controls, relevant domain experience, knowledge transfer, and commercial alignment. Executive chemistry matters, but it should not substitute for demonstrated fit with the actual work.
Use selection as mobilization
The best procurement process leaves the selected team better prepared to start. Evidence, risks, assumptions, and open decisions should flow directly into mobilization rather than disappearing after the award.