Kaizen, a Japanese term meaning "change for the better," is a core Lean management philosophy focused on continuous, incremental improvement. Unlike radical overhauls, Kaizen emphasizes small, daily changes made by every employee—from the shop floor to the executive suite—to cumulatively drive significant gains in productivity and quality. As a Lean technique, Kaizen functions as the primary engine for eliminating waste (Muda), reducing variability, and optimizing process flow. It relies on a participatory culture where frontline workers are empowered to identify inefficiencies and propose solutions at the source of work, known as the Gemba. The methodology is typically operationalized through the Plan-Do-Check-Act (PDCA) cycle, ensuring that improvements are data-driven, tested, and standardized to prevent regression. The implementation of Kaizen within a Lean framework results in measurable benefits, including reduced lead times, lower defect rates, and enhanced employee morale. Ultimately, Kaizen transforms an organization into a "learning enterprise" capable of sustaining long-term competitive advantages without requiring massive capital investment.