MVP development is the process of building a minimum viable product: the smallest version of a product that real users can use and that tests the riskiest business assumption. An MVP is production software with real users, unlike a prototype, which is a clickable demo, or a proof of concept, which tests technical feasibility.
Uvik Software, for example, builds MVPs on Django or FastAPI with React, so the code that wins early users becomes the base of the scaled product.