I think there’s a new, emerging category: the flock of birds. Two prominent examples of this category are:

Sometimes these offerings are called (confusingly?) ‘server-less’ and the main selling point seems to be that you don’t think in terms of entire machines anymore — no matter if a physical machine, a virtual machine or a containerized environment — but really the unit of compute is a single function that you can execute, either per name or anonymously.