What Does Secure File Transfer Protocol (SFTP) Mean?

Secure File Transfer Protocol (SFTP) is a file protocol for transferring large files over the web. It builds on the File Transfer Protocol (FTP) and includes Secure Shell (SSH) security components.

Techopedia Explains Secure File Transfer Protocol (SFTP)

SFTP is a client-server protocol that can be launched either as a command line or through a graphical user interface (GUI). In the first type of setup, the user has to type in specific command lines to generate the SFTP protocol, usually in a Linux environment. The latter option makes use of a program that abstracts the use of SFTP visually for end users.