Perl is a popular scripting language that is used to create different web-oriented apps, including CGI scripts. Among the features that distinguish it from many other languages is the usage of modules - parts of Perl code that complete predefined jobs and they are universally accepted. Basically, instead of creating custom-made program code to make something or pasting tens and hundreds of lines of code inside your script, you're able to "call" some module which is already available for this specific job and use just several lines of code. Due to this fact, your script will be executed quicker as it'll be smaller. Employing modules will additionally make your script simpler to edit as you'll need to search through much less code. If you wish to use Perl on your site, you have to ensure that the needed modules are available on your server.