Several key Lean Tools are integral to the Lean methodology. For instance, Value Stream Mapping (VSM) is a visualization tool that helps organizations understand and improve the flow of materials and information. It identifies bottlenecks and opportunities for improvement. Similarly, the Kanban Board is a visual management tool that aids in controlling work in progress and improving workflow.

Kaizen, translating to 'continuous improvement,' is a fundamental Lean principle that encourages small, incremental changes. Another critical concept is Muda, which refers to any activity that consumes resources without adding value. Tools like 5S Methodology, which stands for Sort, Set in order, Shine, Standardize, and Sustain, help in organizing the workplace to reduce waste and improve efficiency.

Hoshin Kanri is a strategic planning tool that aligns an organization's goals with its activities, ensuring that everyone is working towards the same objectives. Just-In-Time (JIT) production focuses on producing only what is needed when it is needed, reducing inventory costs. Poka-Yoke, or mistake-proofing, prevents errors in the production process, enhancing quality.

Other advanced concepts include Heijunka, which aims to level out the production schedule to reduce variability and Gemba, which emphasizes the importance of going to the actual place where work is done to understand and solve problems. Andon is a visual feedback system that alerts workers to issues in real-time, allowing for immediate corrective action.