Perl is a well-liked web-oriented computer programming language, that's designed to make CGI scripts as well as many different applications. It's very convenient due to the fact that you don't need to submit the very same code over and over again to have some action executed a couple of times, but you will be able to apply modules. They are pre-defined subroutines or sets of operations which can be called and executed in a script. This means that, you will be able to include only a reference to a given module inside your code rather than using the whole module code time and time again. In this way, your script will be shorter, therefore it will be executed much faster, not mentioning that it'll be easier to maintain and / or modify. When you'd like to use a third-party ready-made Perl script rather than creating your own, it will most likely need particular modules to be pre-installed on the web hosting server.