preprint for: International Encyclopedia of Human Geography, 2 nd éd. ElsevierThis article presents the fundamentals of e-business and e-commerce and their relations with geography. Electronic platforms and marketplaces provide economies of scale and network effects. E-business gives value chains a high degree of organizational (outsourcing) and locational (offshoring) flexibility, and firms can purchase intermediate goods and business services on a global basis. The rise of e-business shapes the geography of work: tasks that process information are amenable to various forms of teleworking, at home, on travel, or in a coworking space. E-commerce is a subset of e-business, related to trade of goods and services. E-commerce is often defined a...