Point of Sale (POS) refers to the place where a transaction takes place. The POS transaction involves a customer and a merchant along with a product or service that is being purchased through the POS system. This means that any monetary exchange processed through POS software is called a POS transaction. To perform the sales transaction, electronic equipment is required. This represents the POS terminal through which credit card payments are being processed. The POS system comprises of the software and hardware that goes into the creating the billing process. Such elements include display unit, device in which to enter the data about the products that are being purchased, barcode scanner, receipt printer, cash register, and software interface.

Points of sale (POSs) are an important focus for marketers because consumers tend to make purchasing decisions on high-margin products or services at these strategic locations. Traditionally, businesses set up POSs near store exits to increase the rate of impulse purchases as customers leave. However, varying POS locations can give retailers more opportunities to micro-market specific product categories and influence consumers at earlier points in the sales funnel.

For example, department stores often have POSs for individual product groups, such as appliances, electronics, and apparel. The designated staff can actively promote products and guide consumers through purchase decisions rather than simply processing transactions. Similarly, the format of a POS can affect profit or buying behavior, as this gives consumers flexible options for making a purchase.