A secure payment gateway is a technology that facilitates online transactions between customers and merchants. It encrypts sensitive information, such as credit card numbers and personal details, ensuring that data is transmitted safely over the internet. This process helps protect against fraud and unauthorized access, making online shopping safer for everyone. When a customer makes a purchase, the payment gateway verifies the transaction with the bank or payment processor. Popular examples of secure payment gateways include PayPal, Stripe, and Square. These services provide businesses with the tools needed to accept payments securely, enhancing customer trust and satisfaction.