MVP model
As long as we’re testing the riskiest assumption during a meeting with possible customers (e.g. “customers will pay us to solve this problem”) with the least effort it’s an MVP.
If it doesn’t test the riskiest assumption call it a beta/pilot/POC – just don’t call it an MVP.
“Customers will pay us to solve the problem” is the most critical part of our success and this is our main perspective, build something that is a painkiller for our customers.