diff --git a/xos/sdncontroller.m4 b/xos/sdncontroller.m4
new file mode 100644
index 0000000..2a24cdb
--- /dev/null
+++ b/xos/sdncontroller.m4
@@ -0,0 +1,53 @@
+# Copyright 2017-present Open Networking Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+tosca_definitions_version: tosca_simple_yaml_1_0
+
+# compile this with "m4 sdncontroller.m4 > sdncontroller.yaml"
+
+# include macros
+include(macros.m4)
+
+node_types:
+    tosca.nodes.SDNControllerService:
+        derived_from: tosca.nodes.Root
+        description: >
+            SDN Controller Service for vSPGW
+        capabilities:
+            xos_base_service_caps
+        properties:
+            xos_base_props
+            xos_base_service_props
+
+    tosca.nodes.SDNControllerServiceInstance:
+        derived_from: tosca.nodes.Root
+        description: >
+            SDN Controller Service Instance for vSPGW
+        properties:
+            xos_base_tenant_props
+
+    tosca.nodes.SDNControllerVendor:
+        derived_from: tosca.nodes.Root
+        description: >
+            SDN Controller Vendor for vSPGW
+        properties:
+            xos_base_props
+            name:
+                type: string
+                required: true
+
+    tosca.relationships.VendorOfTenant:
+           derived_from: tosca.relationships.Root
+           valid_target_types: [ tosca.capabilities.xos.SDNControllerServiceInstance ]
+