Citizix published a tutorial about installing and setting up sftp server in Ubuntu 22.04.
How to install and set up sftp server in Ubuntu 22.04
The SSH File Transfer Protocol (also Secure File Transfer Protocol, or SFTP) is a network protocol that provides file access, file transfer, and file management over any reliable data stream. It is a file transfer protocol that leverages a set of utilities that provide secure access to a remote computer to deliver secure communications.
How to install and set up sftp server in Ubuntu 22.04