The technology that allows for the secure transfer of credit card information online is called SSL/TLS encryption. This cryptographic protocol establishes a secure connection between a user's browser and a web server, ensuring that sensitive data, such as credit card numbers, is transmitted securely over the internet. SSL (Secure Sockets Layer) and TLS (Transport Layer Security) encrypt the data, protecting it from interception or tampering by unauthorized parties. This secure transmission is vital for e-commerce websites, as it instills consumer confidence in transactions, safeguarding personal and financial information and compliance with regulations.