The comment you reply to happens to hit the nail on the head. Some perl was slipped deep into some platform in the 2000s. While client software could be python

The comment you reply to happens to hit the nail on the head. Some perl was slipped deep into some platform in the 2000s. While client software could be python, java or C# (usage has evolved quite a bit over the decades), they ultimately called and depended upon a bunch of Perl on some servers.