Six Sigma is a management philosophy and set of methods introduced by Motorola and General Electric to eliminate defects in their products and processes. Six Sigma views variation as the enemy and provides with a goal of having less than 3.4 defects per million opportunities. This methodology prescribes project-oriented improvement phases known as Define, Measure, Analyze, Improve and Control (DMAIC). The most important focus of the Six Sigma methodology is that it propagates companies to become customer centric and deliver customers the products and services in the exact specification, highest quality, exact delivery time and quantity