Proof of Concept

Definitions

Proof of Concept (PoC) is a small-scale implementation or demonstration built to verify that a particular idea, technology, or approach is feasible and worth pursuing further. Unlike a prototype (which aims to be a rough version of the final product), a PoC focuses narrowly on answering a specific technical or business question: Can this API handle our data volume? Does this algorithm produce acceptable results? Can these two systems integrate? PoCs are intentionally quick, rough, and disposable, typically taking days to weeks rather than months. They are critical at decision points: before committing significant resources, a PoC provides evidence-based confidence (or reveals showstopping issues early). In enterprise sales, a PoC demonstrates that a vendor's product works in the customer's specific environment. In security research, a PoC exploit demonstrates that a vulnerability is exploitable. The key discipline with PoCs is treating them as throwaway explorations rather than foundations for production code, though in practice, PoC code frequently lives on far longer than intended.
In plain English: A quick, rough version of something built just to prove the idea works — not polished, just proof that it's possible.