Even though e-commerce has different definitions in different countries or fields, its key is still the business model that relies on electronic equipment and network technology. With the rapid development of e-commerce, it includes not only the main connotation of shopping, but also auxiliary services such as logistics and distribution.
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.