This report provides an overview of marketing essentials, focusing on the roles and responsibilities within a marketing context. It begins by defining the core concepts of marketing and how it creates awareness, targets markets, and influences consumer behavior. The report then delves into specific marketing functions, such as understanding customer needs, tracking market trends, establishing brand values, and utilizing marketing tools. It emphasizes the interrelation of marketing with other departments, including production, human resources, and finance, to illustrate how a cohesive approach is essential for success. The report uses Tesco PLC as an example to demonstrate these concepts in practice. The conclusion highlights the significance of integrated marketing efforts and their impact on brand awareness, customer loyalty, and overall business success. References to academic sources are included to support the analysis.