How can I share files on the server with others users in internet?

I have a linux server that I manage via SFTP and SSH. Some files are generated on the server through scripts. How can I make it so that I can give users on the Internet links to specific files (so that a specific user can only access one converse file) that are on this server? What technology stack do I need to learn? I would like to automate this process so that I run the script, it generates a file for the user and I would immediately see a link that I would give to the user. Is this even possible to do? If it is important, then the server has a domain name, and also runs on CentOS 7.