The
latter acceptance has been made from company Motorola, which had implemented for
the first time and eventually gave birth to the method. Six Sigma’s purpose is to reduce
the variance-variability in processes, so to provide to the clients-consumers of the
organization, products or services which are more reliable and with fewer errors.
Moreover, some companies (like airline ones) implement or try to adopt Seven Sigma
level, which means even fewer defects and more satisfied customers.