CGI is a good fit if you don't maintain the server it runs on. You've got a basic "user" account and can just upload a CGI script. For example, you've got a sta

CGI is a good fit if you don't maintain the server it runs on. You've got a basic "user" account and can just upload a CGI script. For example, you've got a static website and need a simple contact form handler. Apache had an option to run the scripts as your user, rather than default of "nobody". That allows segmenting the processes of different users on the same server.