It is serverless in the sense that the dev (or sysadm) doesn't have to worry about the server. You can't touch anything that affects the OS in any way, you only

It is serverless in the sense that the dev (or sysadm) doesn't have to worry about the server. You can't touch anything that affects the OS in any way, you only really give it your code and binaries to run. In ways it's similar to Heroku but with a very different pricing model.