Which element in an Azure Resource Manager template is used to build resource dependencies?

The element used to build resource dependencies in an Azure Resource Manager (ARM) template is "DependsOn." This element explicitly defines the order in which resources are deployed within the template. By using DependsOn, you can ensure that one resource is created only after another specified resource has been successfully deployed.

For instance, if you are provisioning a virtual machine that requires a network interface and a public IP address, you can use the DependsOn clause to indicate that the virtual machine should not be created until both the network interface and the public IP address are provisioned. This dependency management is crucial for maintaining proper resource relationships and avoiding deployment errors that can occur when resources are created in a wrong order.

The other elements mentioned serve different purposes: Resources are defined within the template to specify what resources are being created; Outputs are used to return values from the deployed resources after the deployment is complete; and Parameters allow for the input of values into the template when deploying, making the template flexible and reusable. However, none of these elements specifically handle resource dependency like the DependsOn element does.