Azure Resource Manager vs classic deployment

When deciding which deployment model to use for your resources, there are three scenarios to be aware of:

1. The service supports Resource Manager and provides only a single type.
2. The service supports Resource Manager but provides two types - one for Resource Manager and one for classic. This scenario applies only to virtual machines, storage accounts, and virtual networks.
3. The service does not support Resource Manager

For Compute, Storage, and Networking resources, you have the option of using either Resource Manager or Classic deployment.