Lean Transformation Stages Published on March 20, 2017 in Lean Is Tough – The Phases of a Lean TransformationFull resolution (781 × 421) Lean Transformation Stages Schematic overview of the different phases of a lean transformation, from the start through the valley of tears, rapid improvement, and finally peak performance. This work by Christoph Roser at AllAboutLean.com is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Please credit the image as shown below. For digital documents and web pages please do include the links as shown below. Thank you.By Christoph Roser at AllAboutLean.com under the free CC-BY-SA 4.0 license.