Lean is a methodology focused on improving efficiency and reducing waste in various processes. Originating from the Toyota Production System, it emphasizes value creation for the customer while minimizing resources, time, and effort. By implementing Lean principles, organizations can streamline operations, enhance productivity, and foster a culture of continuous improvement. Techniques such as 5S, Kaizen, and Value Stream Mapping are commonly used to identify and eliminate non-value-added activities, ultimately leading to better quality and customer satisfaction.