The following Azure assets can be custom tagged:
:azure_cloud_service,
:azure_ip_address,
:azure_storage,
:azure_security_group,
:azure_vm_scale_set,
:azure_virtual_network_gateway,
:taggable_asset,
:azure_taggable_asset,
:azure_sql_server,
:azure_sql_database,
:azure_redis_cache,
:azure_app_service_plan,
:azure_service_bus_namespace,
:azure_batch_account,
:azure_virtual_network,
:azure_backup_vault,
:azure_recovery_services_vault,
:azure_hd_insight_cluster,
:azure_search_service,
:azure_sql_data_warehouse,
:azure_stor_simple_device_manager,
:azure_log_analytics_workspace,
:azure_app_service,
:azure_express_route_circuit,
:azure_cdn_profile,
:azure_snapshot,
:azure_network_interface,
:azure_managed_disk,
:azure_app_insight,
:azure_document_db,
:azure_key_vault,
:azure_application_gateway,
:azure_app_service_environment,
:azure_reservation_order,
:azure_reservation,