This document discusses change management and outlines key aspects of managing organizational change. It begins with definitions of change management and reasons why organizations change. It then covers common reactions to change, success rates of change initiatives, and impact of change. Models of change management are presented, including those developed by Kurt Lewin, McKinsey, and Kotter. Resistance to change is examined along with reasons why change efforts fail. The conclusion emphasizes the importance of change for organizations to adapt to future challenges.