This report is a case study examining the impact of digital marketing on the profitability and sales of Marks & Spencer. It begins with an introduction to professional development and the significance of digital marketing in today's business environment, highlighting the use of social media and other digital tools. The background focuses on the digital revolution's effect on marketing and advertising, emphasizing the importance of understanding consumer behavior and return on investment. The research aims to examine the impact of digital marketing on Marks & Spencer's revenue and profits, with objectives including studying social media marketing concepts, digital tools, challenges, and strategies. The report provides rationale for the research topic, emphasizing the importance of the study for professional development and offers detailed information about digital marketing's influence on the company's success. The report also includes a list of references from books, journals and online sources.