This report provides a comprehensive analysis of marketing essentials, using Beauty Giant, a UK-based cosmetics company, as a case study. The report is divided into two parts: the first part examines the role of a marketing manager and its interrelation with other business units, while the second part involves a structured analysis of the marketing mix (product, price, place, promotion, people, process, and physical evidence) and the development of a strategic marketing plan for a new anti-aging product, "Beauty Giant Beautiful Forever Creme." The marketing plan includes an overview of the company, product details, vision, strategic objectives, SWOT and STP analyses, a detailed marketing mix breakdown, and a budget forecast. Furthermore, the report compares Beauty Giant's marketing mix with that of its competitor, Sephora, highlighting differences in product offerings, pricing strategies, distribution channels, and promotional activities to inform the development of effective marketing strategies.