The Unified Payments Interface (UPI) is a real-time payment system created by the National Payments Corporation of India that allows for seamless money transfers between bank accounts through mobile devices. By utilizing either a mobile number or a virtual payment address, users can execute secure transactions with ease. UPI facilitates a range of financial activities, including direct transfers, bill payments, and transactions with merchants, significantly simplifying digital payments throughout India. This comprehensive platform is designed to enhance the efficiency and accessibility of financial transactions for millions of users.