BPR, or Business Process Reengineering, is the fundamental rethinking and radical redesign of business processes to achieve dramatic improvements in critical performance measures like cost, quality, service, and speed. It involves analyzing and redesigning workflows and processes within and between organizations. BPR is necessary because customer demands and competition are increasing while existing 19th century processes are struggling to keep up with 21st century needs. BPR follows a process of understanding current processes, inventing new improved processes, constructing the new processes, and managing change to implement the new way of working. When done correctly, BPR can significantly improve organizational performance and efficiency.