Build-Measure-Learn

From The Lean Startup by Eric Ries

The Build-Measure-Learn feedback loop is a core principle of lean startup methodology introduced by Eric Ries. It is a cyclical learning process that prioritizes speed in product development through three sequential phases: transforming ideas into a minimum viable product (Build), measuring customer reactions and market performance (Measure), and learning from results to determine whether to continue or pivot direction (Learn). This iterative approach reduces market risk by enabling entrepreneurs to test business assumptions early with minimal resources, rather than relying on extensive planning or large initial investments before launch.