Perl is a well-liked programming language and one of its key pros is the fact that it works with the so-called modules - short pieces of code which include subroutines and perform different tasks. The convenient side of using modules is the fact that you won't have to write custom-made code or include the entire code for a given action whenever it has to be performed. Instead, you'll be able to include only one line in your Perl script that calls a particular module, which consequently will perform the needed action. Not only will this result in shorter and optimized scripts, but it'll also help you make adjustments quicker and much easier. In case you are not a programmer, but you would like to employ a Perl application which you've found on the worldwide web, for example, it is likely that the application will need specific modules to be already installed on your web hosting server.