UPI stands for Unified Payments Interface and is a way to collect payments from your customer's bank account securely and in real-time. This inter-operable payment infrastructure facilitates instant online payments from a smartphone using a Virtual Payment Address (VPA). VPA is a user-generated unique payment identifier, such as abc@bank where 'abc' is chosen by the customer based on availability, and 'bank' is the name of the bank/app where the customer signs up for UPI. VPA is mapped to the customer's bank account without disclosing account numbers or other details. It can also map multiple bank accounts to a single UPI enabled bank app with separate VPAs for each bank account.
CCAvenue sends a payment collection request to the customer's VPA, which the customer authenticates with an MPIN on his UPI enabled bank app and receives instant payment confirmation. It's that simple!