Being able to create dummy resources with in ARM templates
Being able to create dummy resources with in ARM templates. As a common worflow is to create template and then use the outputs from that template within other templates. This allows us to more automation.
James Jackson commented
AWS Cloudformation allows you to do this. Where you can use a wait handler to perform this type of action. Without creating a actual virtual cloud infrastructure. So can reference inputs as outputs from one template in another.