E-business (electronic business) is the Internet's conduct of business processes. Such e-business processes include the purchase and sale of goods and services, customer service, payment processing, managing quality management, cooperation with business partners, information sharing, automated employee services, recruiting, and more.
The point of sale or point of purchase is the time and place of completion of a retail transaction. The merchant measures the amount owed by the customer at the point of sale, indicates that amount, may prepare the customer's invoice and indicates the customer's options for payment