Perl is a well-liked web-oriented programming language, which is used to make CGI scripts along with a variety of applications. It is very convenient for the reason that you do not have to create the very same code repeatedly in order to have some process executed more than once, but you are able to use modules. They are pre-defined subroutines or groups of activities which can be called and executed within a script. That is to say, you are able to include only a reference to a certain module in your program code rather than using the whole module code over and over again. In this way, your script will be shorter, thus it will be executed a lot faster, not mentioning that it will be easier to maintain and modify. In case you wish to employ a third-party ready-made Perl script as an alternative to creating your own, it'll probably need certain modules to be pre-installed on the web hosting server.