This research project examines the impact of social media marketing and mobile technology on Tesco, a leading international grocery retailer. The study utilizes a case study approach to analyze the effectiveness of Tesco's digital marketing strategies and the role of mobile technology in enhancing customer experience and operational efficiency. The research findings highlight the importance of social media platforms like Facebook and Instagram in influencing customer purchasing decisions and the need for continued investment in digital technologies to improve organizational performance. The study concludes with recommendations for Tesco to further leverage digital innovation and enhance its competitive advantage in the evolving retail landscape.