logo
episode-header-image
Jul 13
1h 41m

Rapidly test and validate any startup id...

Lenny Rachitsky
About this episode

Jake Knapp and John Zeratsky are the co-creators of the Design Sprint (the famous five-day product innovation process) and authors of the bestselling book Sprint. After decades of working with over 300 startups in the earliest stages, they discovered that most startups fail not because they can’t build, but because they build the wrong thing. The very beginning of a startup is your highest-leverage moment, and most teams waste months or years by skipping a few critical early questions. Jake and John developed the Foundation Sprint to help startups validate ideas and compress months of work into just two days.

What you’ll learn:

1. The step-by-step Foundation Sprint process that compresses three or four months of validation into two days—including templates you can use immediately

2. Why differentiation is the #1 predictor of startup success (with the 2x2 framework that you can use with your team)

3. The three fundamental questions every founder should answer before writing a line of code

4. The “note and vote” technique that eliminates groupthink and gets honest answers from your colleagues

5. The seven “magic lenses” for choosing between multiple product ideas

6. The biggest mistake engineers make when building with AI tools

7. The paradox of speed: why “building nothing first” can get you to product-market fit faster

Brought to you by:

Brex—The banking solution for startups: https://www.brex.com/product/business-account?ref_code=bmk_dp_brand1H25_ln_new_fs

Paragon—Ship every SaaS integration your customers want: https://www.useparagon.com/lenny

Coda—The all-in-one collaborative workspace: https://coda.io/lenny

Transcript: https://www.lennysnewsletter.com/p/the-foundation-sprint-jake-knapp-and-john-zeratsky

My biggest takeaways (for paid newsletter subscribers):

https://www.lennysnewsletter.com/i/167485876/my-biggest-takeaways-from-this-conversation

Where to find Jake Knapp:

• X: https://twitter.com/jakek

• LinkedIn: https://www.linkedin.com/in/jake-knapp/

• Website: https://jakeknapp.com/

Where to find John Zeratsky:

• X: https://twitter.com/jazer

• LinkedIn: https://www.linkedin.com/in/johnzeratsky/

• Website: https://johnzeratsky.com/

In this episode, we cover:

(00:00) Introduction to Jake Knapp and John Zeratsky

(04:41) Origins of the Design Sprint

(11:06) The Foundation Sprint process

(14:40) Phase one: The basics

(16:57) Case study: Latchet

(28:50) Phase two: Differentiation

(36:24) The importance of differentiation

(40:15) Thoughts on price differentiation

(43:37) Case study: Mellow

(46:04) Custom differentiators

(49:30) The mini manifesto

(52:02) Phase three: Approach to the project

(54:50) Magic lenses activity

(01:02:39) Prototyping and testing

(01:10:00) Real-world examples and success stories

(01:15:15) Motivation behind The Foundation Sprint

(01:17:15) The outcome of the sprint: The founding hypothesis

(01:19:28) The Design Sprint

(01:28:19) The role of AI in prototyping

(01:36:50) Final thoughts and resources

Referenced:

• Introducing the Foundation Sprint: From the creators of the Design Sprint: https://www.lennysnewsletter.com/p/introducing-the-foundation-sprint

• Making time for what matters | Jake Knapp and John Zeratsky (authors of Sprint and Make Time, co-founders of Character Capital): https://www.lennysnewsletter.com/p/making-time-for-what-matters-jake

• Eli Blee-Goldman on LinkedIn: https://www.linkedin.com/in/eli-blee-goldman/

• Character Capital: https://www.character.vc/

• Character Labs: https://www.character.vc/labs

• Etsy: https://www.etsy.com/

• Shopify: https://www.shopify.com/

• Naming expert shares the process behind creating billion-dollar brand names like Azure, Vercel, Windsurf, Sonos, Blackberry, and Impossible Burger | David Placek (Lexicon Branding): https://www.lennysnewsletter.com/p/naming-expert-david-placek

• Sonos: https://www.sonos.com/

• Vercel: https://vercel.com/

• Windsurf: https://windsurf.com/

• April Dunford on product positioning, segmentation, and optimizing your sales process: https://www.lennysnewsletter.com/p/april-dunford-on-product-positioning

• Positioning: https://www.lennysnewsletter.com/p/positioning

• 10 things we know to be true: https://about.google/company-info/philosophy/

• Gandalf: https://en.wikipedia.org/wiki/Gandalf

• Frodo: https://en.wikipedia.org/wiki/Frodo_Baggins

• Mordor: https://en.wikipedia.org/wiki/Mordor

• 35 years of product design wisdom from Apple, Disney, Pinterest, and beyond | Bob Baxley: https://www.lennysnewsletter.com/p/35-years-of-product-design-wisdom-bob-baxley

• The Primal Mark: How the Beginning Shapes the End in the Development of Creative Ideas: https://www.gsb.stanford.edu/faculty-research/publications/primal-mark-how-beginning-shapes-end-development-creative-ideas

• Base44: https://base44.com/

• Solo founder, $80M exit, 6 months: The Base44 bootstrapped startup success story | Maor Shlomo: https://www.lennysnewsletter.com/p/the-base44-bootstrapped-startup-success-story-maor-shlomo

• Google Meet: https://meet.google.com/

• Blue Bottle Coffee: https://bluebottlecoffee.com

• Reclaim: https://reclaim.ai/

• The official Foundation Sprint + Design Sprint template: https://www.character.vc/miro-template

• Rippling: https://www.rippling.com/

• Latchet: https://latchet.com/

• Mellow: http://getmellow.com/

• AxionOrbital: https://axionorbital.space/

Recommended books:

Sprint: How to Solve Big Problems and Test New Ideas in Just Five Days: https://www.amazon.com/Sprint-audiobook/dp/B019R2DQIY

Make Time: How to Focus on What Matters Every Day: https://www.amazon.com/Make-Time-Focus-Matters-Every/dp/0525572422

Click: How to Make What People Want: https://www.amazon.com/Click-Make-What-People-Want/dp/1668072114

Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email podcast@lennyrachitsky.com.

Lenny may be an investor in the companies discussed.



To hear more, visit www.lennysnewsletter.com
Up next
Yesterday
The AI-native startup: 5 products, 7-figure revenue, 100% AI-written code | Dan Shipper (co-founder/CEO of Every)
Dan Shipper is the co-founder and CEO of Every. With just 15 people, Every publishes a daily AI newsletter, ships multiple AI products, and operates a million-dollar-a-year consulting arm—all while their engineers write virtually zero code. It’s the most radical example of AI-fir ... Show More
1h 34m
Jul 6
Solo founder, $80M exit, 6 months: The Base44 bootstrapped startup success story | Maor Shlomo
Maor Shlomo is the founder of Base44, an AI-powered app builder that he bootstrapped to an over $80 million acquisition by Wix in just six months. As a solo founder (with severe ADHD), he hit $1 million ARR just three weeks after launch and grew the product to more than 400,000 u ... Show More
1h 31m
Jul 3
I’ve run 75+ businesses. Here’s why you’re probably chasing the wrong idea. | Andrew Wilkinson (co‑founder of Tiny)
Andrew Wilkinson is the co‑founder of Tiny, a holding company that quietly owns more than three dozen profitable internet and consumer brands, including Dribbble and the AeroPress coffee maker. Starting as a teenage barista and web designer, he’s created a portfolio approaching $ ... Show More
1h 28m
Recommended Episodes
Sep 2024
Building Business on LinkedIn: Colin Hirdman’s Blueprint for Growth
What are some practical ways entrepreneurs to authentically use Linkedin for business growth? Colin Hirdman is an expert on growth marketing who has started numerous companies, and now focuses on helping people succeed on LinkedIn.  Join Scott and Colin as they explore:  * Colin ... Show More
58m 4s
Mar 2025
Snapchat CEO: Exact Formula Used To Build A $130 Billion Company! I Said No To $3 Billion From Mark Zuckerberg! It’s Time To Quit Your Job When You Feel This!
From turning down $3 billion from Facebook to building a $100 billion empire, Evan Spiegel reveals the blueprint behind Snapchat. Evan Spiegel, co-founder & CEO of Snapchat (now Snap Inc.), founded the app while at Stanford and became the youngest billionaire at 25. In this conve ... Show More
2h 29m
Sep 2024
Groupon and Descript: Andrew Mason
Andrew Mason was a 27-year-old with a degree in music when he co-founded one of the fastest growing companies of all time: Groupon. Its deep discounts on everything from sushi rolls to plastic surgery soon became a ubiquitous part of life in cities across the world. In 2011, just ... Show More
1h 11m
Jan 2025
#790: Chris Sacca — How to Succeed by Living on Your Own Terms and Getting Into Good Trouble
Chris Sacca is the co-founder of Lowercarbon Capital and manages a portfolio of countless startups in energy, industrial materials, and carbon removal. If it's unf**king the planet, he's probably working on it. Previously, Chris founded Lowercase Capital, one of history's most su ... Show More
3h 5m
Jul 2024
Top 5 VC funds raise big $, venture capital DPI is back, and Sequoia’s offer to LP’s | E1981
This Week in Startups is brought to you by… OpenPhone. Create business phone numbers for you and your team that work through an app on your smartphone or desktop. TWiST listeners can get an extra 20% off any plan for your first 6 months at https://www.openphone.com/twist Assembly ... Show More
1h 1m
May 30
How to build a $1M+ startup using AI (Full Tutorial)
For the full experience, watch this episode on YouTube: https://www.youtube.com/watch?v=d0j_n3OOM7c Episode 712: Sam Parr ( https://x.com/theSamParr ) talks to Greg Isenberg ( https://x.com/gregisenberg ) talk about how to find a startup idea and build it in a couple hours using ... Show More
58m 46s
Aug 2024
#200 Brian Halligan: Building HubSpot into a Multi-Billion Dollar Company
From Cambridge startup to NYSE heavyweight, HubSpot co-founder Brian Halligan reveals the sophisticated frameworks behind scaling a $30B enterprise. Now a Sequoia Capital Senior Advisor, Halligan shares rare insights into the nuanced decisions that separate exceptional companies ... Show More
1h 4m
Jan 2025
Mike Maples on 100-Baggers, David Swensen & the AI Revolution | #568
Today’s guest is Mike Maples Jr. a partner at Floodgate, a pre-seed and seed-stage venture capital firm that’s invested in companies like Twitter, Lyft, Twitch, Okta. He’s also the author of Pattern Breakers: Why Some Start-Ups Change the Future. In today’s episode, Mike shares h ... Show More
1h 11m
May 28
How I built a $3B AI Startup + 7 AI Business Ideas
Episode 711: Shaan Puri ( https://x.com/ShaanVP ) talks to Guillermo Rauch ( https://x.com/rauchg ) about building Vercel plus 7 business ideas to start in AI. — Show Notes: (0:00) Dropout to job offer from Facebook (3:38) Genius vs accident (21:04) Building Vercel (25:26) AI sta ... Show More
1h 17m
Jul 1
How Gusto built a $9.5 billion company by identifying a burning problem
Tomer London is the co-founder and Chief Product Officer at Gusto, the payroll and people platform used by over 400,000 businesses. He grew up helping run his dad’s clothing store in Israel — an experience that sparked his mission to build better tools for small business owners. ... Show More
55m 1s