It's interesting how many still seem to (in this thread) believe you either have to run your own Linux servers in your basement or do FaaS (much better word to avoid the confusion), when there are many great in-between options.
Is that your personal definition? On App Engine I deploy a function that gets invoked whenever an HTTP endpoint is requested. It clearly maps to the semantic of "function as a service" and I don't know about or control the number of servers so it also has the properties of "serverless".
