Lenny’s Podcast126 min
Sean Ellis · Sep 5, 2024
Key learnings- Ask users how they would feel if they could no longer use the product; a high share saying 'very disappointed' is a leading…
- Survey a random sample of users who have actually experienced the product and used it more than once recently, not just sign-ups…
- Use the very-disappointed group as a filter: find their primary benefit and the context ('why is this important to you') to craft…
Lenny’s Podcast101 min
Jag Duggal · May 16, 2024
Key learnings- Start from a deep, emotionally felt customer pain point rather than a feature idea; Nubank tied its origin to widely hated…
- Use the Sean Ellis survey as a gate before scaling: ask how disappointed users would be if the product disappeared, and raise the…
- Keep small, measure whether customers truly love it, and avoid scaling problems that aren't yet solved; scaling early creates big…
Lenny’s Newsletter♥ 18
Jun 2, 2020 · 7 min
Subscriber post — summary onlyLenny Rachitsky shares advice, drawn from researcher Matt Gallivan, on which questions to ask users to judge product-market fit. He recommends a survey for 100+ active users and interviews for smaller bases, while…
Lenny’s Newsletter♥ 451
Dec 23, 2025 · 24 min
Subscriber post — summary onlyLenny Rachitsky and Noam Segal report on a 1,750-respondent survey of tech workers about AI productivity. The core argument is that AI is overdelivering for most people, with the biggest gains in founders and PMs, while…
Lenny’s Newsletter♥ 97
Aug 9, 2022 · 43 min
Subscriber post — summary onlyPart five of a six-part series on building a consumer business, focused on retention and finding product-market fit. The post argues PMF is a spectrum of confidence, signaled by flattening retention curves, organic…
SVPG · Marty CaganAug 16, 2022
Aug 16, 2022 · 5 min
The author argues that many companies reach an early beachhead of customers, assume product/market fit, and then stall because they neglected market fit. Market fit means discovering 'market pull': what makes customers…
SVPG · Marty CaganJan 26, 2014
Jan 26, 2014 · 3 min
Marty Cagan argues that a startup's central goal is reaching Product-Market Fit, the point where a product has proven demand and justifies investing in sales, marketing and scale. He standardizes on Marc Andreessen's…
Lenny’s Podcast104 min
Benjamin Lauzier · Sep 29, 2024
Key learnings- Before reaching product-market fit, avoid marketplace mechanics and focus on delivering core value to one side of the marketplace.
- Pick the hardest side to grow, which is usually supply, and find a hack or existing channel to jumpstart it before worrying about…
- Measure liquidity as the share of intentful demand that converts, and track a market health metric like ETA that predicts it.
Lenny’s Newsletter · Free post♥ 193
Jan 28, 2020 · 8 min
Lenny Rachitsky compiles the most concrete and actionable definitions of product-market fit (PMF) from leading investors, founders, and operators, organized into signals before a product exists and signals after launch…
Lenny’s Podcast102 min
Rahul Vohra · Mar 23, 2025
Key learnings- Virality rarely comes from viral mechanics; a viral factor above one is essentially unsustainable, so word of mouth driven by…
- Track your time with a simple running log of task switches instead of your calendar, then review it weekly to see where your…
- When leadership is stretched thin, hire a president to take over operations and executive team management so the CEO can spend…