Booking.com - at least until I left in 2018, not sure about now.
Their code base is (still) mostly in Perl (5), running on uWSGI bare instances, installed on KVMs deployed on a self-hosted infrastructure.
Their code base is (still) mostly in Perl (5), running on uWSGI bare instances, installed on KVMs deployed on a self-hosted infrastructure.
Sane application scale perl is pretty much a different language to old school scripting perl - the two just happen to share a parser and a VM.
(not everything about Booking's code is necessarily sane, when you've got a codebase that's been running that long making heaps of money there's inevitably stuff people wish they could replace, but your 'most likely' simply isn't descriptive of most companies running OO perl application stacks in 2022 - the ones that wrote crap perl mostly already blamed perl and are now writing hopefully slightly less crap something else)