Eric Ries is a Silicon Valley entrepreneur and pioneer of the Lean Startup movement. He graduated from Yale University with a degree in computer science and co-founded several startups. His experiences with success and failure led him to develop a Lean Startup methodology to help startups succeed. This methodology is based on principles like validated learning and the build-measure-learn feedback loop. It emphasizes developing minimum viable products to test hypotheses, measuring customer feedback, and using that feedback to pivot the product or strategy as needed. The goal is to minimize the time required to learn what customers want in order to accelerate a startup's progress.