Each year, I join my friend Ed Zimmerman (lawyer, super angel, wine enthusiast and raconteur) at his annual Venture Crush First Growth conference (fka First Growth Venture Network) to talk about product-market fit with early-stage entrepreneurs.

Each year, I try to think anew about the topic, reflecting on some of the lessons and research related to my entrepreneurship class at Harvard Business School.

Below is this year’s version, complete with a new framework for thinking about the three kinds of experiments all pre product-market fit startups must undergo: Consumer Value Proposition experiments, Go To Market experiments and Business Model experiments.

Feedback welcome!