The document defines e-commerce and discusses its key features such as the exchange of digitized information, being technology-enabled and mediated, and including intra- and interorganizational activities that support exchanges. It also outlines the major frameworks that influence e-commerce strategy, including the technological, capital, media, and public policy infrastructures. Finally, it categorizes the five major types of e-commerce: business-to-consumer, business-to-business, consumer-to-consumer, peer-to-peer, and mobile commerce.