The 5S methodology is a foundational tool in Lean practices, designed to improve workplace efficiency, organization, and safety. It consists of five steps: Sort, where unnecessary items are removed from the workspace; Set in Order, which involves organizing tools and materials for easy access; Shine, focused on cleaning and maintaining the area to identify issues quickly; Standardize, creating consistent practices to sustain the improvements; and Sustain, ensuring ongoing adherence through habits and discipline. Together, 5S fosters a more productive environment, reduces waste, and sets the stage for continuous improvement.