Perl is a well-liked web-oriented programming language, that's designed to make CGI scripts and also many different apps. It's very convenient considering that you don't have to submit the same code again and again in order to have some action executed a couple of times, but you are able to apply modules. They are pre-defined subroutines or sets of functions which can be called and executed in a script. This means that, you'll be able to add only a reference to a specific module in your code as an alternative to using the whole module code time and time again. This way, your script will be shorter, thus it'll be executed a lot faster, not mentioning that it'll be a lot easier to maintain and modify. When you wish to employ some third-party ready-made Perl script as an alternative to writing your own, it'll probably need particular modules to be pre-installed on the web hosting server.