This report analyzes the business environment of ASOS, an online fashion retailer, using Porter's Five Forces model and Value Chain analysis. It examines the impact of external factors like competition, suppliers, and technology on the apparel retail subsector. The report also explores the internal environment of ASOS, including its value chain activities and how it adapts to external changes. It concludes by discussing the usefulness and limitations of Porter's model in the context of ASOS's business environment.