The document discusses e-commerce, digital markets, and digital goods. It covers the unique features of e-commerce like ubiquity, global reach, and interactivity. It also discusses different types of e-commerce models like business-to-business, business-to-consumer, and mobile commerce. The document outlines how e-commerce enables new efficiencies in areas like procurement. It also covers electronic payment systems used for e-commerce transactions and m-commerce applications and services.