Eric Ries is an entrepreneur and the author of the international bestseller The Lean Startup , which has sold over one million copies and has been translated into over thirty languages. He has founded a number of startups including IMVU, where he served as CTO, and he has advised on business and product strategy for startups, venture capital firms, and large companies, including General Electric, where he partnered to create the FastWorks program. Eric has served as an Entrepreneur-in-Residence at Harvard Business School, IDEO, and Pivotal and he is the founder and CEO of the Long-Term Stock Exchange.