A Payment Gateway is a technology that securely processes online payments by transferring payment information between a customer, merchant, and bank.
A Payment Gateway acts as a bridge between a website/app and the bank, enabling customers to pay using credit cards, debit cards, UPI, or net banking.
It ensures that transactions are encrypted, authorized, and processed securely. In India, payment gateways operate under guidelines from the Reserve Bank of India and are often integrated with systems by the National Payments Corporation of India.
"When you buy a product online and pay using a debit card or UPI, the payment gateway processes the transaction securely."