I think in correlation to your other comment is that there is the notion that all of this is done for you via the cloud thus you don't really need/want to do it

I think in correlation to your other comment is that there is the notion that all of this is done for you via the cloud thus you don't really need/want to do it yourself. If you do wish to deal with this yourself yes you need something but that is not the goal here. The goal is to deploy something under the assumption that a provider (eg: the cloud) is already doing this for you.