Are there any other "Kubernetes-As-A-Service" providers other than GCP?
I think AWS has competing solutions, but I am not sure about the current state of affairs.
Amazon has a Elastic Beanstalk and some other container related tooling. Microsoft has Azure Container Services (ACS), and under that, a Kubernetes as a Service managed service abbreviated AKS.
There's Azure Kontainer Service (AKS) in public preview.
AWS's managed Docker cluster orchestration service is ECS.