Wizard of OZ MVP
A customer validation technique, one of high-fidelity types of MVPs, whereby the product team builds an illusion of a product but with key functionality carried out by a human (or 3rd party service), in order to validate it with real customers at low-cost and high velocity. Use it for testing a specific solution hypothesis by simulating the user experience of the actual intended product as accurately as possible, but accept that the customers will be faced with a slight time delay since a human cannot react as fast as a computer.