This template will use existing backup vault and policy, and enables protection of registered IaasVM containers.
To create backup vault and backup policy use existing template: https://github.com/Azure/azure-quickstart-templates/tree/master/101-backup-vault-create
Know more about IaasVM Backup: https://azure.microsoft.com/en-us/blog/azure-backup-announcing-support-for-backup-of-azure-iaas-vms/