The aim of this book is not to provide managers and their teams with a magic, finite solution, but to give a complete overview enabling each manager to use these levers, and above all the different criteria, to assess the level of operational excellence in their own organization, to question themselves and to reflect on the areas for improvement to be undertaken. The book provides generic advice based on observations and field experiences from several operational excellence integration missions, particularly those based on KAIZEN principles. This book is therefore not only a feedback that can be improved and adapted according to organizations and situations, but also a kind of guide for leaders and actors of change. The aim of this advice book is not to present a battery of tools and methods (the subject of another advice book), but to outline six (6) essential levers for operational excellence, broken down into one hundred (100) criteria, in order to awaken and support not only managers, but also their teams.