A Lean Management System for Performance is one of the most basic building blocks for any operating system.
Why? Well, having established a standard for performance you need a robust Management System to ensure that this level is achieved on a regular basis. The objective is to stabilise and maintain the process to a sustainable, reliable level through rigorous problem solving.
Furthermore, it provides a foundation for step change improvements to be made and prevent them from falling back. A bit like a saw tooth effect. Without it, improvement efforts in the long term will be wasted.