Total Quality Management (TQM) aims to meet customer expectations through continuous improvement. The five principles of TQM are to produce quality work the first time, focus on the customer, have a strategic improvement approach, improve continuously, and encourage teamwork. Six Sigma is a data-driven approach to reducing process variation and defects using DMAIC (Define, Measure, Analyze, Improve, Control). Case studies show how TQM and Six Sigma helped healthcare provider AtlantiCare improve patient satisfaction and double revenues, and helped appliance maker LG Electronics and pharmaceutical company Catalent Pharma Solutions reduce defects and process inefficiencies.