Which technology is commonly used to secure data transmission over the internet?

The use of SSL (Secure Sockets Layer) is a standard technology for securing data transmission over the internet. It provides a secure channel between two devices operating over the internet, ensuring that any data exchanged remains private and integral. SSL accomplishes this by encrypting the data being transmitted, making it difficult for unauthorized parties to intercept or tamper with the information. This technology is particularly important for securing online transactions and protecting sensitive information like credit card numbers and personal details.

In contrast, HTML (HyperText Markup Language) is primarily a markup language used to create the structure of web pages, while CSS (Cascading Style Sheets) is used for styling the presentation of web pages. Both HTML and CSS do not secure data transmissions, as they are not designed to handle data encryption or secure communications. FTP (File Transfer Protocol) is a standard network protocol used to transfer files between a client and server on a computer network, but it does not provide security measures to protect data during transmission. Therefore, SSL stands out as the definitive choice for securing data over the internet.