The Only Thing That Matters — Marc Andreessen

The Only Thing That Matters

Author: Marc Andreessen Published: June 2007 URL: https://pmarchive.com/guide_to_startups_part4.html

Summary

Part 4 of Andreessen’s “Guide to Startups” series. Argues that product-market fit is the single most important factor in a startup’s success, outweighing team quality and product polish. Introduces Rachleff’s Law and the BPMF/APMF framework (Before/After Product-Market Fit).

Key Claims

1. Of team, product, and market — market matters most
2. A great market pulls product out of the startup; a bad market kills even great teams
3. Startups exist in two phases: before and after product-market fit
4. Before PMF, nothing else matters — do whatever it takes to reach it
5. You can always feel whether you have PMF or not

Concepts Referenced

• product-market-fit
• pivoting

Backlinks

• case-study-airbnb
• case-study-comparison
• case-study-slack
• positioning
• product-market-fit
• recommended-reading
• start-here
• startup-failure-modes
• the-startup-lifecycle
• the-validation-stack
• where-the-experts-disagree