58:37David Rusenko - How To Find Product Market Fit
From Y Combinator · Published Jul 22, 2019 · Watch on YouTube
TL;DR
Finding product-market fit (PMF) is the hardest thing for a startup and can take 18+ months, as it did for Weebly. The process is iterative: talk to customers to understand their problems (not their proposed solutions), rapidly prototype and test with users, and track key metrics (returning usage, NPS above 50, cohort-based renewal rates).
Key insights
- There are only two truly hard things at a startup: finding product-market fit and hiring/building a world-class team. Making money is a distant third.
- Sales (signups) is a poor metric; focus on returning usage (daily, 3-day, 7-day, 30-day), NPS (target >50), and paying customer renewal rates (cohort-based, not churn).
- Customers do not read; even obvious sign-up forms can be misinterpreted. UX testing with 3–5 sessions reveals critical, non-obvious usability bugs.
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