A product with the minimum viable number of features to make it acceptable to the market. To put it in simple terms, a minimal viable vehicle in say 1900 needed at least means to propel it (an engine), steer it and stop it. By 2019 it needs windows, heating, comfortable seating, a radio, antilock brakes, an ability to be driven at speeds substantially higher than in 1900, or 1919, etc. Moreover, if a product is to be disruptive, to displace the incumbent technology, it typically has to offer some of the key features of that incumbent technology.