Perl is a server-side scripting language similar to PHP, Ruby, & Python that allows web applications to perform complex tasks in relationship to database queries in website development. Many web hosting companies offer Perl pre-installed as part of their LAMP stack PaaS plans on shared web servers but not all. Since not many websites are running Perl code in production on shared hosting, there is basically just the installation of extension support in Apache for the programming language with custom configuration options in cPanel, Plesk, Virtualmin, etc.
Perl hosting can be best customized for advanced development on VPS and dedicated server plans. cPanel is written in Perl while Craigslist, Slashdot, Ticketmaster, & other major websites have also implemented innovative new web software solutions based upon Perl code. Independent Perl scripts can be installed on shared web hosting and run with cron to provide interrelated website functionality.