The SSH File Transfer Protocol (SFTP) is a secure method for transferring files over a network. It operates over the SSH (Secure Shell) protocol, which provides a secure channel for data exchange. SFTP allows users to upload, download, and manage files on remote servers while ensuring that the data is encrypted and protected from unauthorized access. SFTP is commonly used by system administrators and developers to manage files on remote systems securely. It supports various file operations, including file permissions and directory listings, making it a versatile tool for file management in a secure environment.