In Lean Six Sigma, two robust methodologies—DMAIC and DMADV—serve as roadmaps for process improvement and design. Both share a data-driven philosophy and a focus on delivering customer value, yet they are designed for different kinds of challenges. Knowing when to apply each approach can make the difference between solving a problem and reinventing excellence. Understanding the Two Frameworks DMAIC: Improve What Exists DMAIC stands for Define, Measure, Analyze, Improve, and C