
Over the past decade, lean start-up methodology, which prizes early customer feedback, experimentation, and iteration—has emerged as the approach of choice. To get a sense of how entrepreneurs and venture capitalists view the framework offered in “Strategy for Start-Ups,” which recommends a more formal approach to strategy development, the HBR senior editors Daniel McGinn and Walter Frick discussed these ideas with three start-up veterans. Niraj Shah is a cofounder of the online furniture retailer Wayfair, which was launched in 2002 and had its IPO in 2014. Bijan Sabet is a cofounder of Spark Capital and an early investor in Twitter, Tumblr, Foursquare, and Trello. Jennifer Lum is building her fifth start-up (four have been acquired by public companies) and is the COO of Forge.AI, a company that structures data for intelligent machines. Edited excerpts follow.