Prototype

A prototype is a model you use to try out an idea. It can be as simple as paper screens you swap by hand or as detailed as an interactive demo. In the example, tapping Book seat on the class page leads to a "Seat reserved" confirmation.

Prototypes let people try a design before it is built, so the team can test interactions and get realistic feedback.

They range from low-fidelity, such as linked wireframes, to high-fidelity versions that look and feel like the real product. Choose the fidelity that answers your question.