Article · ~2,000 words

What it feels like when you've found product-market fit

Lenny Rachitsky · Lenny's Newsletter Freemium Beginner

The qualitative half of the answer, told through founders describing the moment things flipped: inbound you cannot keep up with, servers falling over, customers telling their friends without being asked. It is useful precisely because the feeling arrives before the metrics confirm it. Read it to recognize the pull when it starts.

  • PMF often feels like demand you struggle to keep up with
  • Word of mouth spreading on its own is a core tell
  • The feeling usually precedes the metrics catching up
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It answers 3 questions

  1. My first 5 customers were friends who signed up to be nice. How do I know if any of them actually want the product?
  2. How do I know if I've found product-market fit?
  3. How do I know when I've validated enough to actually start building?

Read with it

  1. The single best thing ever written on customer conversations. It teaches you to ask about the customer's life and past... momtestbook.com Book · ~130 pages The Mom Test Rob Fitzpatrick
  2. The essay that put 'product-market fit' into the startup vocabulary. Read it for the gut-level description of what PMF feels... pmarchive.com Essay · ~15 min read The Only Thing That Matters Marc Andreessen
  3. Turns the vague feeling of product-market fit into a number you can move. Ask users how they would feel if they could no longer... First Round Review Article · ~20 min read How Superhuman Built an Engine to Find Product/Market Fit Rahul Vohra
  4. Once you are testing an idea, this piece gives you concrete signals that tell you whether it is actually working, from... Lenny's Newsletter Article · about 15 min read How to Know If You've Got Product-Market Fit Lenny Rachitsky
  5. The nuanced counterweight: PMF isn't a single binary moment, it can be lost, and 'market' is doing more work than founders... a16z.com Article · ~20 min read 12 Things About Product-Market Fit Andreessen Horowitz (a16z)
  6. The permission slip to recruit users by hand, do things manually, and deliver 'insanely great' experiences to your first few... paulgraham.com Essay · ~15 min read Do Things That Don't Scale Paul Graham
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