No, I found that a bit wrong. it's more like Mesos+Marathon, or Kubernetes. It's a cluster management solution that manages your services or processes and their rolling deployments. can run on-prem on your linux or windows machines, or managed on azure with a portal. You can host any executable (or containers). And it does reverse proxy for you too.

Exactly! I found their description a bit inaccurate too. I am yet to see a true service offering on other platforms like service fabric. [Disclaimer: I work at MSFT]

Lambda is "azure functions", which isn't included in this guide.