This document discusses change management models and trends in organizational change. It describes Lewin's three-stage change management model of unfreezing, transitioning, and refreezing. It also outlines McKinsey's 7-S model and Kotter's 8-step change model. The document notes that internal and external forces can drive organizational change and lists common catalysts like crises, performance gaps, and new technologies. Finally, it discusses trends organizations often follow in changing like flattening hierarchies, decentralizing decision-making, increasing employee empowerment and adaptability.