Sean Ellis

coined "growth hacking", PMF survey, GrowthHackers

Sean Ellis is the founder of GrowthHackers and author of 'Hacking Growth' (with Morgan Brown). He coined 'growth hacking' while leading early growth at companies including Dropbox and Eventbrite, and developed the 40% PMF survey rule — asking users how disappointed they'd be without the product — now a standard founder diagnostic.