Electronic commerce, commonly written as e-commerce or eCommerce, is the trading or facilitation of tra ingin products or services using computer networks such as the Internet. Electronic commerce draws on technologies such as mobile commerce, electronic funds transfer, supply chain management, Internet marketing online transaction processing, electronic data inte (EDI), inventory management systems, and automated data collection systems. Modern electronic commerce typically uses the World Wide Web for at least one part of the transaction's life cycle, although it may also use the technologies such as e-mail.