This report provides an overview of marketing essentials, focusing on the role of the marketing function in modern organizations, using Cadbury as a case study. It covers marketing concepts, plans, functions, and components, including the marketing mix and its elements: price, place, product, and promotion. The report details the responsibilities of the marketing department, such as collecting and assessing marketing data, creating market plans, designing products, setting prices, managing distribution channels, and implementing promotional activities. Furthermore, it examines the interrelation between marketing and other organizational functions like production, sales, research and development, human resources, and finance, emphasizing the importance of coordination. The assignment critically evaluates the marketing function, including market research, product design, branding, and distribution, concluding with an analysis of marketing's strategic role in achieving business objectives and enhancing market share.