AWS was never built to support amazons website, it was never the result of amazon.com's internal code-base of "hosting" getting made public, it was never amazon's excess peak server capacity, etc, it had virtually no relation to the hosting of amazon.com at all, it was an independent project that might have benefited from a lot of the general design principles of how amazon.com was built, but that is it.

All of these things are widely believed myths that have little to no basis in reality.

It certainly was not designed as some kind of Perl hosting environment.

It didn't even host Amazon.com at all until many years after the fact.