This essay examines TESCO, a major UK-based international grocery and general merchandise retailer, and analyzes the impact of external factors, particularly the COVID-19 pandemic, on its operations. The analysis includes a PESTEL framework to assess political, economic, social, technological, environmental, and legal factors influencing TESCO. The essay discusses how changes in the external environment over the past three years, including economic fluctuations, changing consumer behaviors, and technological advancements, have affected TESCO's profitability and market position. It further explores the opportunities and threats faced by the company, such as online business expansion, competition from rivals, and the implementation of new technologies. The essay also highlights the strategies TESCO has adopted to adapt to these challenges, including cost-saving measures, online services, and market expansion. Overall, the essay provides a comprehensive overview of TESCO's business environment and its adaptation to the dynamic external factors.