Muda, Mura, Muri.

Kaizen Institute. (n.d.). Muda, Mura, Muri. https://kaizen.com/muda-mura-muri/

This article from the Kaizen Institute explains the "Three Ms" of Lean: Muda (waste), Mura (unevenness), and Muri (overburden). The author describes how these three concepts are interrelated and how they contribute to process inefficiency. Muda is categorized into the traditional seven wastes, while Mura and Muri focus on workflow stability and resource capacity. The resource argues that a truly Lean process must address all three to achieve sustainable improvement. By identifying and eliminating these three forms of waste and strain, organizations can create smoother, more efficient operations that deliver higher value to customers. This is a foundational concept for anyone practicing Kaizen or Lean Six Sigma.