信息和网络技术的介入,彻底改变了商业模式。电子商务时代的来临使企业的主要经营活动,如销售、订购、采购、付款、会计,以及所有交易资料的记录、传递、认证与管理,都可以通过Ｉｎｔｅｒｎｅｔ和企业内、外网络的应用系统来进行。电子商务一般可划分成两大类:企业对顾客(Ｂｕ The involvement of information and networking technologies has revolutionized the business model. The advent of the era of e-commerce enables enterprises to record, transfer, certify and manage the major business activities of the enterprise, such as sales, ordering, purchasing, payment, accounting, and transaction information, through the Internet and the application system of the network inside and outside the enterprise get on. E-commerce can generally be divided into two categories: business to customer (Bu