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+.. This work is licensed under a Creative Commons Attribution 4.0
+.. International License. http://creativecommons.org/licenses/by/4.0
+.. Copyright 2019 ONAP Contributors.  All rights reserved.
+
+
+VNF Instantiation
+=================
+
+**Pre-requisites**
+
+- the VNF is part of a Service Model (see: Service Design)
+
+   Note: in ONAP SDC tool, VNF is named "VF"
+
+
+**Possible methods with ONAP to instantiate a VNF**
+
+- With **A La Carte**
+  method, the user needs to build and send a VNF instantiation
+  request.
+
+    Note 1: prior to be able to send a request to instantiate
+    a VNF, the user needs to instantiate a Service Object and then will
+    need to refer to that Service instance in the VNF instantiate request.
+
+    Note 2: after having instantiated the VNF object, the user needs to
+    instantiate a VF-module object, refering to the previously instantiated
+    VNF object.
+
+    Note 3: the request to instantiate the VF-module object will, at last, send
+    a request to the selected Cloud Platform (Openstack, Azure, K8S...).
+
+- With **Macro**
+  method, the user do not need to send any
+  VNF instantiation request. VNF instantiation is being automatically
+  performed by ONAP when sending the request to instantiate the Service
+  (see: Instantiate Service).
+
+
+**Possible Tools to perform VNF Instantiation**
+
+the user needs such a tool only if using the "A La Carte" method.
+
+- **via ONAP VID Graphical User Interface tool**
+
+- **via any tool able to perform REST API requests**
+  (for example : Robot Framework, Postman, Curl...) connected
+  to **ONAP SO** legacy API.
+
+With "A La Carte" method
+------------------------
+
+.. toctree::
+   :maxdepth: 1
+
+   using ONAP VID Portal <../vid/index.rst>
+   using ONAP SO REST API <../so1/index.rst>
+
+With "Macro" method
+------------------------
+
+VNF and VF-Module instantiation are performed automatically when performing
+Service Instantiation.