Advantages of CGI:

• CGI program is a language independent i.e., CGI program can be written in any language that allows one to writ in normal program since they are executed in the same way as the normal program.
• Another advantage is that it's a very simple intreface. It is not necessary to have any special library to create a CGI program, or a particular API. Instead, it relay on the standard concept of standard input, standard output and environment variables to communicate with the web server.