E-commerce refers to the trading activities and related service activities in the form of electronic transactions on the Internet, intranet and value-added network (VAN), which is the electronization and networking of all links of traditional business activities.
E-commerce includes electronic currency exchange, supply chain management, electronic trading market, online marketing, online transaction processing, electronic data interchange (EDI), inventory management and automatic data collection system. In this process, the information technologies used include: Internet, extranet, e-mail, database, electronic directory and mobile phone.