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The Initial Ideal Customer Profile (IICP) Worksheet

Reify · reifyworks.com Free Intermediate

This worksheet is built for exactly your situation: choosing one narrow persona to start with when you could plausibly serve several. It scores each candidate segment on how strong the product fit is, how reachable they are, and how big the opportunity could become, which turns a gut call into a comparison you can defend. Fill it out for two or three candidate groups you found during interviews and let the scores argue with your instinct.

  • Compare a few candidate customer groups side by side instead of picking one from a hunch.
  • Weigh product fit and reachability alongside market size, a smaller reachable group can win.
  • Revisit the worksheet once you've actually sold to your first customers, the scores should update.

The question it answers

  1. How do I define an ideal customer for a product no one is searching for yet?

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 definitive essay on where good ideas come from: notice problems you personally have, don't force it. Use it as the lens for... paulgraham.com Essay · ~20 min read How to Get Startup Ideas Paul Graham
  3. A short, practical field guide to customer discovery: who to talk to, how to find them, and how many. Pairs perfectly with The... talkingtohumans.com Book · ~80 pages (free PDF available) Talking to Humans Giff Constable
  4. 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
  5. 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
  6. Market size is meaningless until you know exactly who you're for, and Lenny turns that into a concrete, repeatable ICP exercise... Lenny's Newsletter Article · ~15 min read How to identify your ideal customer profile (ICP) Lenny Rachitsky
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