This report provides a comprehensive analysis of marketing essentials, focusing on the retail company Aldi. The report begins by outlining the roles and responsibilities of various marketing functions within Aldi, including marketing information systems, product management, market research, financing, marketing planning, promotion, and pricing. It then explores the interrelationship of marketing with other organizational functions such as finance, HR, operations, production, IT, sales, research and development, and customer service. The report further delves into a comparative analysis of the marketing mix of Aldi and Lidl, examining elements such as product, price, place, and promotion. Finally, it presents a marketing plan specifically tailored for Aldi, incorporating SWOT analysis and strategic recommendations. The report aims to provide a deep understanding of marketing principles and their practical application in a real-world business context, offering valuable insights into the strategies employed by Aldi and its competitor, Lidl, to achieve their business objectives and maintain a competitive edge in the retail market.