[NetStrikeForce]

I think both AWS and Azure have pretty strong PaaS services where you just deploy your [nodejs|python|php] app. Heroku also comes to mind...

[jacques_chester]

AWS has Elastic Beanstalk. Azure is still finding their own PaaS pathway.

Cloud Foundry gives you the "just push" experience for both of these (as well as vSphere, OpenStack, GCP and more to come). It's open source, with the IP owned by an independent foundation.

Disclosure: I work for Pivotal, we donate the majority of engineering on Cloud Foundry.