This comprehensive guide delves into the fundamental principles of marketing, exploring its role within an organization, its interrelationship with other functional units, and the application of the marketing mix (7Ps) to achieve business objectives. It provides a detailed analysis of the marketing environment, examines the significance of interrelationships between marketing and other functional units, and critically evaluates the key elements of the marketing function. The guide also includes a step-by-step approach to developing and evaluating a basic marketing plan, incorporating practical examples and real-world applications. This resource is designed to equip students and professionals with the knowledge and skills necessary to effectively understand and implement successful marketing strategies.