This report provides an in-depth analysis of Just Eat, an online food service company, through the lens of disruptive innovation theory. It begins with an introduction to innovation and the disruptive innovation theory developed by Clayton M. Christensen, outlining its five key steps and relevance to business development. The report then applies this theory to Just Eat, examining its historical evolution, business model, and the development of its products and services, including online ordering and food delivery. Furthermore, the report explores the advantages and disadvantages of disruptive innovation theory, offering insights into how Just Eat can leverage this theory for future product and service enhancements, market share growth, and competitive advantage in the global food delivery market. The report also considers Just Eat's mission, vision and business canvas model. The analysis covers the company's operations across multiple countries and its strategic approach to remaining competitive in the dynamic food delivery industry.