Azure Container Service vs Docker Datacenter: What are the differences?
Azure Container Service: Deploy and manage containers using the tools you choose. Azure Container Service optimizes the configuration of popular open source tools and technologies specifically for Azure. You get an open solution that offers portability for both your containers and your application configuration. You select the size, the number of hosts, and choice of orchestrator tools, and Container Service handles everything else; Docker Datacenter: Develop and manage apps at any scale. Docker Datacenter is an integrated solution including open source and commercial software, the integrations between them, full Docker API support, validated configurations and commercial support for your Docker Datacenter environment.
Azure Container Service and Docker Datacenter belong to "Containers as a Service" category of the tech stack.