The author's definition of Serverless is pretty different from what I understand. It's called Serverless mostly because it's not billed based on the # of serve

The author's definition of Serverless is pretty different from what I understand. It's called Serverless mostly because it's not billed based on the # of servers, instead it is mostly billed by # of requests and/or the CPU time * dedicated RAM. With this changed billing model comes with the expectations like relatively fast scaling up/down and "scale down to zero/minimum". Disclaimer I work on App Engine which is arguably the OG Serverless service.