Drawer 02 · 536 notes · 32 people · 2005–2026

Discovery & customer research

Customer interviews, opportunity mapping, validation, and jobs to be done

Q:
Answers from Discovery & customer research notes, cited
SVPG · Marty CaganApr 16, 2026

Build to Learn vs Build to Earn

Apr 16, 2026 · 6 min

“We have long argued that there have always been at least two major ways to develop product. The most common way, even today in the age of AI, is the project model, which is all about output. This is where stakeholders or executives come up with a prioritized roadmap of features and projects, then for... The post Build to Learn…”

SVPG · Marty CaganMar 30, 2010

Technology First vs. Needs First

Mar 30, 2010 · 5 min

Marty Cagan responds to a debate sparked by Don Norman's essay arguing that big societal innovations are driven by technology first and needs later, which Norman frames against heavy upfront user research. Cagan says…

SVPG · Marty CaganOct 20, 2013

The End Of Requirements

Oct 20, 2013 · 3 min

Marty Cagan argues that product teams should stop framing their work as gathering and documenting requirements, since most so-called requirements are really constraints. He proposes defining products along two…

SVPG · Marty CaganOct 21, 2015

Discovery vs. Delivery

Oct 21, 2015 · 5 min

Cagan argues that product teams face two simultaneous goals: learning fast through discovery about what customers need, and delivering robust, scalable, production-quality software they can release with confidence…

Product Talk · Teresa TorresMar 18, 2015

Fix Delivery to Make Time for Discovery

Mar 18, 2015 · 3 min

Teresa Torres argues that many product managers are so consumed by delivery work (grooming backlogs, triaging bugs, handling schedule slips) that they lack time for discovery, the work of figuring out what to build. Ad…

SVPG · Marty CaganDec 11, 2014

Shared Learning

Dec 11, 2014

Marty Cagan argues that a common and avoidable form of waste in product teams is when one member, often a user researcher, learns something important about customers but the rest of the team doesn't absorb it. Findings…

SVPG · Marty CaganSep 8, 2009

Product Discovery vs. Product Optimization

Sep 8, 2009 · 4 min

Cagan argues that product teams need two distinct disciplines: Product Discovery, which uses prototyping and user testing to find new valuable, usable, feasible solutions, and Product Optimization, which improves an…

SVPG · Marty CaganMay 31, 2018

Skateboards vs. Cars Revisited

May 31, 2018 · 6 min

Marty Cagan revisits Henrik Kniberg's skateboard-versus-car MVP article and argues it describes what engineering-only teams can do, not what true cross-functional product teams should do. He contends that a skilled…

Product Talk · Teresa TorresNov 21, 2011

What Product Assumptions Are You Making?

Nov 21, 2011 · 6 min

Teresa Torres argues that product teams routinely build on untested assumptions, treating hopes as facts, and that this risks building something nobody wants. Using an imagined Caltrain commuter app, she shows how to…

Product Talk · Teresa TorresNov 4, 2011

Turning Big Ideas Into Great Products

Nov 4, 2011 · 3 min

Teresa Torres argues that many startups treat product management as little more than turning feedback into a feature list, and that the discipline remains underdeveloped. She notes that teams know valuable research…

SVPG · Marty CaganOct 24, 2012

Continuous Discovery

Oct 24, 2012 · 3 min

Marty Cagan describes a growing trend where product teams move from batch-style phases to continuous practices in both delivery and discovery. He traces how continuous integration, testing, and deployment have spread…

Product Talk · Teresa TorresAug 3, 2026

Ch. 9: Identifying Hidden Assumptions

Aug 3, 2026 · 5 min

This reading-guide post kicks off a monthly book club around Teresa Torres's Continuous Discovery Habits, focusing on Chapter 9, which covers identifying hidden assumptions. The chapter argues that teams should test the…