AzS-WAS01

The VM named WAS01 runs the portal and your Azure Resource Manager instance. It is responsible for running the Azure Stack administrative portal, as you know already from Azure (codenamed Ibiza). In addition, your Azure Resource Manager instance is running on this VM.

ARM is your instance responsible for the design of the services provided in your Azure Stack instance. ARM will make sure that the resources will be deployed the way you design your templates and that they will be running the same throughout their lifecycle.