I've seen snippets of the back-end code of a public cloud, and it is full of multi-page "switch" statements where they have hard-coded lookup tables for what SK

I've seen snippets of the back-end code of a public cloud, and it is full of multi-page "switch" statements where they have hard-coded lookup tables for what SKUs support what features. It's ugly, it's a maintenance headache, but it does function, and very robustly too. There are no API calls, no microservices, no performance issues, etc...