The document defines e-commerce as the process of buying and selling goods and services online. It discusses the history and growth of e-commerce from the 1980s to the 2000s. The major categories of e-commerce are business-to-consumer, business-to-business, consumer-to-consumer, mobile commerce, and e-government. Benefits to organizations include global reach, cost reduction, and improved customer relations, while benefits to consumers are more products/services, cheaper prices, and instant delivery. The document also provides examples of e-commerce applications and interesting usage statistics.