Perl is a very popular web-oriented computer programming language, that's designed to set up CGI scripts and many different applications. It is really handy because you do not need to produce the same program code time and time again so that you can get some task executed more than once, instead you can apply modules. They're pre-defined subroutines or groups of activities that can be called and executed inside a script. In other words, you will be able to add only a reference to a particular module within your code rather than using the entire module code again and again. In this way, your script will be shorter, therefore it will be executed faster, not mentioning that it'll be much easier to maintain or modify. In case you would like to take advantage of a third-party ready-made Perl script as an alternative to creating your own, it will most likely need specific modules to be present on the hosting server.