Co-founder of Andreessen Horowitz.
Part of Andreessen's legendary 2007 startup guide, written as a founder before a16z existed: how to size a raise against milestones and market windows, the pathologies of too little money and the subtler pathologies of too much.
Marc Andreessen explains in two minutes what a16z actually looks for in startups and why strength of insight beats polish.
Cloudflare's CEO shares two of the company's worst fundraising stories: a Sequoia partner who passed because he didn't think a woman (co-founder Michelle Zatlyn) could lead a security infrastructure company, and an unprepared meet-and-greet with Marc Andreessen that turned out to be a full pitch. Posted during the June 2026 viral VC horror-story wave.