SFTP, or Secure File Transfer Protocol, is a network protocol used to transfer files securely over a secure connection. It operates over the SSH (Secure Shell) protocol, which provides encryption and secure authentication, ensuring that data is protected during transmission. SFTP is commonly used for transferring files between a client and a server, making it a popular choice for businesses and individuals who need to share sensitive information. Unlike traditional file transfer methods, such as FTP (File Transfer Protocol), SFTP encrypts both the commands and the data, preventing unauthorized access. This makes it a reliable option for transferring files in various environments, including web hosting, software development, and data backup. SFTP also supports various file operations, such as uploading, downloading, and managing files on the server.