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Six Sigma

Six Sigma is a business management strategy originally developed by Motorola in 1980s and subsequently popularized by General Electric, where it was introduced by former CEO Jack Welch. The term "Six Sigma" is used in statistics to describe variation and the ability to produce in accordance with customer requirements. Processes that operate with "six sigma quality" are near perfection, which serves as the symbolic goal of a Six Sigma initiative.

By the late 1990s, many companies from the service industry embarked on Six Sigma initiatives, including insurance companies, banks, hotel chains, hospitals and governmental bodies.

Six Sigma offers a structured methodology for improving existing processes. Each project follows 5 individual phases; Define, Measure, Analyse, Improve and Control (DMAIC). Each phase consists of a combination of quantitative and qualitative tools to help determine the baseline performance, analyse root causes and select effective countermeasures. When a completely new product or process needs to be developed, a ‘Design for Six Sigma’ methodology is used, equally made up by 5 structured phases.