The Point of Sale, or POS, is the place where a customer completes a transaction for goods or services. It typically includes hardware like cash registers or tablets, and software that processes payments, tracks sales, and manages inventory. POS systems can accept various payment methods, including cash, credit cards, and mobile payments. They help businesses streamline operations, improve customer service, and gather valuable sales data for better decision-making. Overall, POS systems are essential tools for retailers, restaurants, and service providers.