This document provides an overview of organizational transformation and reengineering. It defines reengineering as the fundamental rethinking and radical redesign of business processes to achieve dramatic improvements. Four key aspects are identified: dramatic improvements, radical changes starting from a clean slate, focusing on processes rather than individual tasks, and redesigning how work is done. Common challenges to reengineering include resistance to change from employees and managers. Success requires strong leadership, focusing on customer needs, questioning underlying assumptions, empowering cross-functional teams, and overcoming communication impediments.