Steve Blank has been at the epicenter of the ‘lean startup’ movement since he ignited it in 2006 with his book The Four Steps to the Epiphany. A Silicon Valley entrepreneur for 21 years who founded or was involved in the launch of eight technology startups (both successes and failures), Blank left that world in 1999 to teach and consult on startups. Today, Blank’s Lean LaunchPad approach (which he teaches at Stanford University, the University of California, Berkeley, and Columbia University) is taught at more than 75 universities worldwide.