Six Sigma, as a proven management system to increase overall company performance and profitability, is a system focusing on achieving the level of excellence in all business processes as well as manufacturing processes. Six Sigma performance level, that represents a process which is defect-free 99.99966 percent of the time, has become a metaphor for defining the vision and system to achieve this performance level. It is also the name of the miraculous change in company culture from the addiction of surviving with problems towards the habit of saving money by solving the problems.