Asos has experienced strong growth, becoming the largest European online-only fashion retailer. It has delivered consistent profits since 2003 and over 60% compound annual growth rate over the last 5 years. Asos focuses on young adults ages 16-34 and offers a wide range of branded and own-label fashion across countries through its localized websites and mobile apps. Its success is attributed to innovations like mobile shopping, international expansion, and social shopping features that enhance the customer experience.