Lean is the set of tools that assist in the identification and steady elimination of waste (muda). As waste is eliminated quality improves while production time and cost are reduced.
Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects and minimising variability in business processes.
Lean 6 Sigma - Production System
The Production System is the common Order-to-Delivery process that is implemented enterprise-wide to improve and achieve Safety, Quality and Velocity goals whilst reducing Costs.
Process management is the ensemble of activities of planning and monitoring the performance of a process. The term usually refers to the management of, business processes and manufacturing processes.