This report delves into the distinct roles of leaders and managers, emphasizing their influence on organizational success. It explores various leadership theories, including situational, system, and contingency theories, and how these frameworks guide decision-making in diverse contexts. The report highlights the functions of a manager, such as planning, organizing, staffing, directing, and controlling, within the context of achieving business objectives. It also examines the application of operational management approaches, using Starbucks as a case study to illustrate lean production strategies and the importance of operational efficiency. Furthermore, the report analyzes the impact of internal and external factors, like objectives, company structure, and PESTLE analysis, on business performance, concluding with the significance of both leadership and management in achieving organizational goals.