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Many startups chase product-market fit as if it’s a moment of discovery. But for deep-tech founders, the journey is often much longer.

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Notes from an AI founder taking a swing at a hundred-billion-dollar incumbent.

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📈Product Market Fit for Physical Products
9 Jul 2025
buildinghardware.substack.com

I asked an 🍎 Apple Vision Pro designer turned solopreneur how he sells HW.

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A theory of demand (and product market fit) that explains it all, and does NOT require ‘pain’ to do it.

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How do you spot the wrong customer before they burn your roadmap? First Round Partner Meka Asonye digs into how now-massively successful startups cracked the code.

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📈Product Market Fit for Physical Products
4 Apr 2025
open.substack.com

I asked an 🍎 Apple Vision Pro designer turned solopreneur how he sells HW.

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Historically product market fit evolved gradually. But we are now seeing established products collapse overnight.

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How to Measure Product-Market Fit
19 Oct 2024
review.firstround.com

Ready to nail product-market fit? We found expert advice for creating a product with widespread demand.

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Doordash and Pizza Arbitrage
30 Jun 2024
readmargins.com

There is such a thing as a free lunch

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The 4 Levels of PMF
7 May 2024
pmf.firstround.com

A new framework to help B2B founders find PMF, faster.

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After interviewing dozens of founders, we pulled together the biggest lessons on finding PMF that stuck with us.

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The Arc PMF Framework
14 Apr 2024
sequoiacap.com

This framework outlines three distinct archetypes of PMF which help you understand your product’s place in the market and determine how your company operates.

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GOAT co-founder and CEO Eddy Lu sits down with First Round Partner Todd Jackson to tell the story of how a decade of middling entrepreneurial ideas finally culminated in the $4B idea for a sneaker marketplace.

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Guillermo Rauch, raised in Buenos Aires and fascinated by computers since age 7, taught himself to code and moved to San Francisco at 18. His company, Vercel — the frontend cloud service behind open-source development framework Next.js — was recently valued at $2.5 billion.

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The founders of Pilot have started three times over, starting with Ksplice (sold to Oracle in 2011) and then Zulip (acquired by Dropbox in 2014).

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WTF is Marketplace Liquidity?
12 Mar 2023
medium.com

Methodologies for understanding and measuring marketplace liquidity

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In our "Paths to Product-Market Fit," Retool founder and CEO David Hsu sits down with First Round partner Todd Jackson to share how the internal tools company hypothesized, tested and iterated its way to 100 happy customers

What Does Product-Market Fit Feel Like?
24 Jan 2023
predictablerevenue.com
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Todd Jackson has experience managing products at Google, Facebook and his own startup. Here's what he learned.

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Reflections on the 20th anniversary of a $100+ billion product

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Babe Ruth and Feature Lists
6 Jul 2022
bringthedonuts.com

Prioritized lists are essential for product managers, right? Yes, but be careful. Ken Norton illustrates why.

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Picking a Market
28 Jun 2022
eleganthack.com

In the Creative Founder, students are paired semi-randomly, and then spend a semester trying to get to product-market fit. I always start them with market selection. A market has three key elements…

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A overview on the basics behind how we quantify product-market fit at Tribe Capital. These are the underpinnings of our underwriting framework.

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We gathered the most surprising anecdotes from seasoned founders about when things clicked into place.