product-market-fit

Expert in product-market fit — the condition where a product satisfies a strong market demand. Covers PMF definition, measurement, the journey to PMF, and what to do before and after. Recognizes that PMF is a spectrum, not a binary, and knows how to navigate the search. Use when "product-market fit, PMF, retention, product market fit survey, traction, pull from market, Sean Ellis" are mentioned.