That is a service that Amazon supplies where you rent access to a virtual machine that can easily be scaled up to a virtual cluster. But it is your machine, and you can do anything with it that you want. Other commonly used options are that you can rent space for your physical machine at a hosting facility, or you can rent an account on a shared web host.

If you want a free service, you'd probably need to find a friend who will let you use their server.

I wouldn't expect the various commercial web hosts to have the latest and greatest version of Perl. And something like EC2 is (at least for light use) a lot cheaper and easier than buying and configuring your own machine.