A point of sale (POS) is the place where a customer completes a purchase. It typically includes a cash register or a digital system that processes payments, tracks sales, and manages inventory. When you buy something at a store, the checkout counter is the POS where the transaction happens. Modern POS systems often use technology like tablets or smartphones, making it easier for businesses to handle sales. They can also integrate with other tools, such as inventory management and customer relationship management systems, helping businesses keep track of their products and improve customer service.