Six Sigma (wikipedia definition) is a set of techniques and tools for process improvement. It was developed by Motorola in 1986. Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes.n important factor in the spread of Six Sigma was GE's 1998 announcement of $350 million in savings due to Six Sigma, a figure that later grew to more than $1 billion. In 2005, Motorola attributed over staggering US$17 billion in savings to Six Sigma. Let's look at what happened to Motorola and GE?