By the years, there have been many various notions about what enterprise course of reengineering (BPR) is and the way profitable it has been as a course of enhancement strategy. Within the early 1990s, Michael Hammer and James Champy authored a best-selling e-book, Reengineering the Company, during which they promoted that typically radical redesign and reorganization of a course of by wiping the slate clear was essential to decrease prices and enhance the standard of service. BPR is the part of Six Sigma approach towards project management. Six Sigma Techniques are used to bring quality assurance and continuous quality improvement in the business process re-engineering.