A prototype is an early, interactive representation of a product built to test ideas, validate design decisions, and gather user feedback before committing to full-scale development. Prototypes range from hand-drawn paper sketches to fully interactive digital simulations that look and behave like the finished product. Prototyping is one of the most critical — and most … Continue reading What Is a Prototype? Types, Fidelity Levels, and Best Tools for UX (2026)