The Six Sigma methodology is mainly based on the data that emerges from a process, counting the defects, establishing the causes, solving the problems, and obtaining the best results. Defects are any failures to deliver the product or service the customer desires. Managers who use this strategy must understand the processes of a business and the level of quality expected by customers and be able to measure the efficiency of each method for optimal results. Six Sigma is responsible for providing clarity in business, an efficient organization, and reducing costs.