The Lean Startup: How Today's Entrepreneurs Use Continuous Innovation to Create Radically Successful Businesses

by Eric Ries

a good design is one that changes customer behavior for the better.

As was mentioned earlier, this is not the way the Lean Startup model works, because customers often don’t know what they want. Our goal in building products is to be able to run experiments that will help us learn how to build a sustainable business. Thus, the right way to think about the product development process in a Lean Startup is that it is responding to pull requests in the form of experiments that need to be run.

Pull system in lean startup