Introduction to Lean

Lean in Lean Six Sigma (LSS) is the part of the methodology that focuses on eliminating waste and streamlining processes to maximize value for customers.

Here’s a clear breakdown:

🚀 What Lean Means in LSS

  • Waste Elimination: Lean identifies and removes activities that consume resources but don’t add value (e.g., delays, excess inventory, unnecessary steps).

  • Flow & Efficiency: It emphasizes smooth workflows, reducing bottlenecks, and ensuring tasks move quickly through a process.

  • Customer Value: The central idea is that every step in a process should contribute to what the customer actually wants.

  • Continuous Improvement: Lean encourages ongoing small improvements rather than one-time fixes.

🗂️ The 8 Types of Waste (Lean calls them “Muda”)

  1. Defects – Errors requiring rework or scrap.

  2. Overproduction – Making more than needed.

  3. Waiting – Idle time when resources aren’t used.

  4. Non-utilized talent – Not using people’s skills effectively.

  5. Transportation – Unnecessary movement of materials.

  6. Inventory – Excess stock tying up resources.

  7. Motion – Unnecessary movement by people.

  8. Extra-processing – Doing more work than necessary.

⚖️ How Lean Fits with Six Sigma

  • Lean = Speed & Flow → Makes processes faster and more efficient.

  • Six Sigma = Precision & Quality → Reduces variation and defects. Together, Lean accelerates processes while Six Sigma ensures consistency and accuracy.

👉 In short: Lean is about doing things faster with less waste, while Six Sigma is about doing things right with fewer errors.