This report provides a comprehensive analysis of change management within organizations, focusing on Diageo as a case study. It critically examines the effects of change on business operations and strategies, considering both internal and external drivers. The report evaluates how these drivers impact team, leadership, and individual behavior, and it assesses measures to reduce negative effects on organizational behavior. Furthermore, it explains the barriers to change and their influence on leadership decision-making, and it applies various leadership approaches to effectively manage business changes. The analysis incorporates PEST and SWOT analyses to provide a thorough understanding of the factors influencing organizational change and leadership strategies. This document is available on Desklib, a platform offering a range of study tools and resources for students.