Product/market fit has always been a fairly abstract concept making it difficult to know when you have actually achieved it. I’ve tried to make the concept less abstract by offering a specific metric for determining product/market fit. I ask existing users of a product how they would feel if they could no longer use the product. In my experience, achieving product/market fit requires at least 40% of users saying they would be “very disappointed” without your product.
Sean Ellis is the CEO of Qualaroo. Prior to Qualaroo, Sean held marketing leadership roles with several breakout technology companies including Dropbox, LogMeIn, Uproar, Eventbrite and Lookout. At two of these companies, he ran marketing through NASDAQ IPO filings. He holds a degree in International Relations from UC Davis.