E-commerce (electronic commerce) is the activity of electronically2 buying or selling of products2 on online services or over the Internet2. Electronic commerce draws on technologies such as mobile commerce2, electronic funds transfer2, supply chain management2, Internet marketing2, online transaction processing2, electronic data interchange2 (EDI), inventory management systems2, and automated data collection2 systems. E-commerce is in turn driven by the technological advances of the semiconductor industry2, and is the largest sector of the electronics industry2.
Modern electronic commerce typically uses the World Wide Web3 for at least one part of the transaction's life cycle although it may also use other technologies such as e-mail3. Typical e-commerce transactions include the purchase of online books (such as Amazon2) and music purchases (music download2 in the form of digital distribution2 such as iTunes Store2), and to a less extent, customized/personalized online liquor store3 inventory2 services. There are three areas of e-commerce: online retailing2, electronic markets2, and online auctions2. E-commerce is supported by electronic business2.