Sometimes it’s nice to be able to share files with other people. There are many sites online where you are able to do this but you are limited by size, type of file, or lacking in security. SFTP gives you the ablity to transfer from your server securely. Users that have SSH access can start using SFTP right away with applications like WinSCP. You don’t want to give people full access to your system, so this is where SFTP only users come in to play.