This report provides a comprehensive analysis of the marketing strategies employed by Primark and Tesco, two prominent players in the retail sector. The report begins with an introduction to marketing and its importance in organizational success, particularly focusing on how marketing departments contribute to sales and profitability. It then delves into the application of the 7Ps of the marketing mix (Product, Price, Place, Promotion, People, Process, and Physical Evidence) for both Primark and Tesco, highlighting their distinct approaches to gain a competitive advantage. The report examines how Primark and Tesco develop their marketing strategies differently, considering factors like product offerings, pricing strategies, distribution channels, and promotional tactics. Furthermore, the report discusses the tactics these organizations use to achieve their objectives, including short-term plans, cost leadership, and expansion strategies. It also outlines the essential steps in developing a marketing plan, such as analyzing the current market position, market analysis, target audience identification, defining goals, and budget allocation. The report concludes with a discussion on developing a coherent, evidence-based marketing plan and its implications for Primark's global expansion, emphasizing the need for adapting to the changing commercial environment and integrating social media marketing. References to academic journals and books support the analysis.