Six Sigma is a carefully designed set of tools and techniques that help improve processes within an organization. The primary goal of the Six Sigma certification is to validate individuals who possess the skills to identify errors or defects in a business process and eliminate them. The Six Sigma certification comes in various skill levels: Yellow Belt, Green Belt, Black Belt, and Master Black Belt. There are different pre-requisites to obtain certifications of various six sigma levels. For example, to obtain, six sigma green belt certification, professionals should require three to four years of full‐time employment experience. Internship or part‐time experience in projects is not considered. Along with the experience, one needs to have perseverance, a logical & analytical mind, a passion for improvement and leadership skills.