You put your config in there and then you can copy them anywhere, even between AWS accounts. They’re even cloud agnostic so when you move to GCP they still work.

Files work great with fucking shell scripts, entirely compatible, it’s rumored that shell scripts beneath the hood are also files. https://github.com/brandonhilkert/fucking_shell_scripts

You can use FSS on docker, kubernetes, bare metal (otherwise known as computers), Windows, Mac, Amiga, VMS etc.

Plan9 which was made by the creators of Go works exceptionally well with files. Some people even say that AWS converts your LB config object to a config file for nginx when it’s provisioned.

If you want to get really crazy you can put all your files in one dir like /etc and then you can use this program grep to search all your configs at once. You can even use things like perl -pi to provide a programmatic interface to editing all your configs at once.