This report provides a comprehensive analysis of marketing essentials, focusing on the comparison of Tesco and Sainsbury's marketing strategies. The report begins with an overview of the marketing process, detailing the roles and responsibilities of the marketing function, and how it interrelates with other departments. The core of the report compares Tesco and Sainsbury using the marketing mix (product, price, place, promotion, physical evidence, process, people) to achieve business objectives, and the strategic marketing plans of each organization. It explores the importance and value of marketing, including SWOT analysis, segmentation, targeting, and positioning. The report concludes with a tactical marketing plan for Tesco, including an executive summary, mission, vision, objectives, and STP strategy, alongside an analysis of their strengths, weaknesses, opportunities, and threats. The report also provides an overview of how Tesco and Sainsbury use branding, promotion, customer service, and product management to achieve their business goals. The report also outlines the future trends in the market, such as social media marketing and the use of chatbots, and includes references to support the analysis.