Proof of Concept (PoC) — Explained with Examples

Proof of Concept (PoC) is a small, focused project or experiment to determine whether a particular idea, technology, or approach is feasible in a specific context. Unlike an MVP (which tests market demand), a PoC tests technical viability.

A PoC typically answers questions like: “Does this library integrate with our existing stack?”, “Can we achieve the required latency with this architecture?”, or “Will this algorithm produce accurate results with our data?” PoCs are usually throwaway code — built quickly, demonstrated to stakeholders, then discarded. The deliverable is knowledge: a Go/No-Go decision for a larger investment.

Real-world analogy. Before building a bridge across a river, engineers build a small-scale model in a wind tunnel. They don’t build the full bridge to see if it works — they test the concept with a miniature version. If the model fails, the knowledge is cheap. If it succeeds, they proceed with confidence.

Example (PoC scenario):

Hypothesis:     "WebSockets will reduce latency vs HTTP polling in our chat app"
PoC approach:   Build a 2-user chat with WebSockets in one week
Success metric: WebSocket latency < 50ms p99 with 100 concurrent connections
Decision:       If successful → build full chat feature. If not → explore SSE.

Related terms: MVP, Prototype, Spike, Agile, Technical Debt

Related tutorial: PoC vs Prototype