[georgemcbay]

Amazon famously mandated such internal services at one point:

https://gist.github.com/chitchcock/1281611

This was rather a long time ago now so I wouldn't be surprised if things have changed since then, though having never worked at Amazon I wouldn't know one way or the other.

[fer]

The main thing that changed is that now the service approach also generally enforces a particular framework (Smithy/Coral)