The technical win is not the commercial win
Getting a technical greenlight from the evaluation team is necessary but not sufficient. The commercial decision is made by a different person with different criteria.
Technical evaluations and commercial decisions are made by different people, with different incentives and different information. The tech lead scores integration ease and feature depth. The budget holder weighs risk, price, timeline, and the cost of switching from the incumbent. A beautiful PoC that impressed the technical team means nothing if the commercial decision-maker cannot see how it reduces their risk or fits their cash-flow cycle.
Presales teams often celebrate a technical win only to lose the deal at signature. The fix is not to do less technical work — it is to map both decision paths from day one. Who signs the PO? What worries them? What would make them comfortable saying yes to a new vendor? That information belongs in your bid strategy alongside the architecture diagram.
A deal is not won until the PO is cut. Until then, the presales job is to keep both the technical evaluator and the commercial decision-maker persuaded — each in their own language.