Serverless doesn't mean there isn't a server—it just means you don't have to manage server instances. You can treat all of AWS as your server. Which means there

Serverless doesn't mean there isn't a server—it just means you don't have to manage server instances. You can treat all of AWS as your server. Which means there must be a way to separate your work from everybody else's work who is sharing AWS with you. Thus the configuration.