This report provides a comprehensive overview of marketing essentials, using the ASOS fashion brand as a case study. It begins with an introduction to marketing and its significance in business, followed by an examination of the roles and responsibilities of the marketing function, including strategic planning, market research, product management, and communication. The report then delves into the relationship between marketing and the marketing environment, emphasizing the importance of understanding customer preferences and market trends. Furthermore, it explores the role of marketing within a wider organizational context, highlighting the interrelationships between marketing and other departments such as finance, human resources, and operations. The report also discusses the significance of these interdepartmental relationships for enhancing overall organizational performance. The report then covers the marketing mix, including product, price, place, and promotion, and how organizations use these tactics to achieve their objectives. Finally, it proposes a marketing plan for a new sports shoe collection, incorporating SWOT analysis and STP model, including an overview, mission, vision, objectives, and monitoring of the plan. The report concludes with a summary of the key findings and recommendations.