The technology that enables online payment processing typically involves payment gateways and secure systems like SSL encryption. Payment gateways facilitate transactions by connecting e-commerce websites with financial institutions, ensuring that customer payment information is securely transmitted. This technology allows for various payment methods, including credit cards, digital wallets, and bank transfers. Additionally, it provides fraud detection and compliance with industry regulations like PCI-DSS. Together, these elements ensure a safe and efficient online payment experience for both merchants and consumers.