I understand that both Azure Service Fabric and Azure Container Services can be used to host microservices through containers.
In what scenarios is it practical & c
Beside the link you pasted for "Choosing between Azure Container Service, Azure Service Fabric and Azure Functions" - Following is what I have found out.
Azure Service Fabric (ASF) is more of a PaaS offering while Azure Container Service (ACS) is more like an IaaS offering.
ASF offers you Actor model which is good for IoT solution (maybe quicker to implement than to DIY on ACS)
ACS in this sense is more open; it provides only container based model and heavily relies and support docker ecosystem. And once its a container its pretty much technology agnostic. This could also be the reason for Microsoft's push for Windows Nano which is a basis for the windows based (server level) containers (my opinion). So with ACS you can either have Windows or Linux containers or both.
ACS also allows you to use the open source, industry famous container orchestrators including Docker Swarm, DC/OS-Mesos. While ASF provides sort of its own orchestration. In other words ASF provides more integrated, easier to use feature rich model but ACS gives you much more openness and flexibility.
MS guys in some conference also mentioned that it could be considered that ASF is more of a Microsoft oriented shop while ACS is more oriented towards open source technologies.