Six Sigma Methodology

Six Sigma is a methodology for improving the quality of production. It was developed by the company Motorola in the early eighties, and it is successfully applied in many software development companies. The purpose of Six Sigma is to make a product of constant quality with statistically measured estimation of defects, improvement of process for eliminating defects, and monitoring these improvements. Six Sigma is successfully applied for improving the organizations in various spheres.

While it has a successful reputation in big companies with thousands of employees, Six Sigma also may be applied in small design teams. This makes it being used by many small web development teams to improve their processes. The basis of the methodology Six Sigma is made by an estimation of deviations of actual metrics of process from a curve of normal allocation of deviations. If those or other metrics of process are in certain limits of deviations, the quality of process results also remains high. In statistics it is accepted to name a unit of measure of deviations as “sigma”.