How companies have succeeded using quality management?

How companies have succeeded in using quality management? From reduction to waste to eliminate defects. Keywords: Organizational Change, Architecture of Quality Management Systems, Team building, Accountability, Building a Quality Management System for your Organization, Operational Excellence. What companies do in order to succeed using Lean and Six Sigma Methodologies? What is the return from investment for companies that use these methodologies? How to detect opportunities to implement Lean and Six Sigma in your company? The salary scale for Lean and Six Sigma Certified Professionals.