I'm asking because I'm contemplating on doing some work on AWS. If code runs on AWS doesn't it mean it makes lots of calls to the different AWS APIs. And then i

I'm asking because I'm contemplating on doing some work on AWS. If code runs on AWS doesn't it mean it makes lots of calls to the different AWS APIs. And then in which environment do you debug the code that makes those API-calls? Is it even possible to debug it locally?