File Transfer is the movement of one or more files from one location to another. A collection of electronically-stored files can be moved by physically moving the electronic storage medium, such as a computer diskette, hard disk or compact disk from one place to another or by sending the files over a telecommunications medium.
FTPS and FTP are both protocols are made from the same formula but are different. FTP has practically no security making (data is not unencrypted) eavesdropping on the data or commands very easy. FTPS was made to fix the unencrypted data issue of FTP. Another one is SFTP. It is the favorite of the protocols. SFTP runs over an SSH which provides robust security by default. SFTP is easier to set up than FTPS. SFTP is very firewall friendly because it only uses one port.