One of the reasons I prefer function as a service "FaaS" over "serverless" is because of how useful on demand ephemeral functions can be on premises. The term

One of the reasons I prefer function as a service "FaaS" over "serverless" is because of how useful on demand ephemeral functions can be on premises. The term serverless implies that the main benefit is not having to deal with infrastructure. While that is helpful, setting up a "standard" means of event driven and stateless business logic is useful in its own right. Can you accomplish that with long running processes? Sure, as long as you are disciplined enough to do so.