Today, instead of documents, you can hold one meeting, and come to the second with a working prototype. On the third, the client can already start working with his pilot team in your solution, which administers his activities, processes, identifies risks, collects data about the object, the digital twin.
Of course, complex integration solutions still require the work of development teams, but all this has become so easy and so accessible that we have no right to hide it from the whole world.