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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.
+
+
+Service Instantiation
+=====================
+
+**Pre-requisites**
+
+- the Service has been designed and distributed (see: Service Design)
+- pre-instantiation operations have been performed
+ (see: pre instantiation section)
+
+**Possible Tools to perform Service Instantiation**
+
+- **via a Graphical User Interface tool**
+ using ONAP applications such as **ONAP VID** and **ONAP UUI** tools
+
+- **via any tool able to perform REST API requests**
+ (for example : Robot Framework, Postman, Curl...) connected
+ to **ONAP SO** legacy API or **ONAP extAPI/NBI** standard TMF641 API
+ to add/delete Service.
+
+**Possible methods with ONAP to instantiate a Service**
+
+- **A La Carte**
+ method requires the user to build and send
+ operations **for each object** to instantiate : Service, VNFs,
+ VFModules and Networks (in other words : once you have instantiated
+ the Service object, you still have to instantiate the various VNFs
+ or Networks that compose your Service).
+ To build those requests, the user needs to define/collect by himself
+ all necessary parameters/values.
+
+- **Macro**
+ method allows the user to build and send
+ **only one request to instantiate all objects** : Service, VNFs,
+ VFModules and Networks. Thanks to templates (see CDS Blueprint in
+ Design section),
+ ONAP will collect and assign all required parameters/values by itself.
+
+
+ Note: **Macro** method is not (yet) available via ONAP VID
+ nor via extAPI/NBI
+
+With "A La Carte" method
+------------------------
+
+.. toctree::
+ :maxdepth: 1
+
+ using ONAP VID Portal <../vid/index.rst>
+ using ONAP NBI REST API (TM Forum) <../nbi/index.rst>
+ using ONAP SO REST API <../so1/index.rst>
+
+With "Macro" method
+-------------------
+
+.. toctree::
+ :maxdepth: 1
+
+ using ONAP SO REST API <../so2/index.rst>