Proof of Concept (POC)

A proof of concept is a time-boxed evaluation in which a prospective customer runs a vendor's product against their own data and workflow to establish whether it does what they need. It is the enterprise counterpart of a self-serve trial, and it differs in that it is scoped, staffed and jointly run: the buyer commits people and access, the vendor commits configuration and support, and both agree in writing what will be tested. That written agreement is the whole discipline. A POC without defined success criteria has no ending — it drifts into an unpaid pilot, then into a habit, and eventually into a deal that closes on relationship rather than on evidence, or does not close at all. A workable structure names three things: the specific use cases in scope and, just as importantly, what is out of scope; the measurable criteria that constitute success, agreed with whoever will actually sign; and a fixed end date with a decision meeting on it. Two failure patterns recur. Scope expansion, where each demo raises a new requirement and the vendor keeps building — the cure is a written change to the criteria rather than a quiet yes. And evaluating the wrong thing: a POC that proves the product works technically while the real risk was adoption, integration effort or security approval has consumed weeks to answer a question nobody was worried about. For vendors, the cost of a POC is high enough that qualifying who signs, what budget exists and what happens on success should precede it, not follow it.