I think the main selling point of Lambda (and most SaaS) is you don't have to worry about the machine running your code. Personally I haven't used it so correct

I think the main selling point of Lambda (and most SaaS) is you don't have to worry about the machine running your code. Personally I haven't used it so correct me if I'm wrong but you don't have to worry about things like monitoring, network administration and security (beyond your code and general opsec).