Perl is a well-liked scripting language that's which is used to build different web-oriented applications, which includes CGI scripts. One of the features that differentiate it from other programming languages is the employment of modules - batches of Perl code which perform predefined tasks and they're commonly accepted. In simple terms, as an alternative to creating custom program code to do something or pasting tens and hundreds of lines of code in your script, you're able to "call" a module which already exists for this particular job and use just several lines of program code. Thus, your script shall be executed quicker because it will be smaller. Employing modules will additionally make your script easier to change because you will have to go through much less code. If you want to use Perl on your site, you have to ensure that the necessary modules are present on your server.