This report provides a comprehensive analysis of the marketing process and planning strategies employed by Marks and Spencer (M&S), a UK-based supermarket chain. Part 1 delves into the definition of marketing in the 21st century, the role of the marketing function within an organization (including social media management, internal communication, market research, and brand control), and its interaction with other departments like HR and finance. It also explains the extended marketing mix (product, price, place, promotion, people, process, and physical evidence) with specific examples from M&S and Burberry. Part 2 focuses on the strategic marketing plan, linking it to the overall organizational mission, corporate strategy, and objectives. It discusses SMART marketing objectives, marketing research, situational analysis (SWOT, PESTLE, 5C), competitor analysis, value proposition, marketing strategies, budget allocation, tactical actions, and control measures, including ROMI and CLV. The report concludes with a detailed media plan, including budget, rationale for selected multi-media activities, and justification for digital, offline, and social media channels.