This document provides an introduction to change management. It defines organizational change as the adoption of new ideas or behaviors by an organization. Successful change must make organizations responsive to developments like changing customer preferences and technology. There are internal and external forces for change, and individuals and organizations may resist change due to factors like fear of the unknown or threats to power structures. Several models of planned organizational change are described, including Lewin's three-step model of unfreezing, moving, and refreezing. Effective change management requires understanding employee reactions, managing resistance through communication and participation, and selecting strategies based on the nature and magnitude of the change.