Added introduction, architecture section
Updated license header on new files.
Change-Id: Ic44db303ab935099698f8c6547904802381fce5c
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-Introduction
+..
+ SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+ SPDX-License-Identifier: Apache-2.0
+
+SD-Core Introduction
====================
-* White paper link
-* Community wiki page or meeting details
-* Generic description of SD Core projects...
+
+The SD-Core™ project is a 4G/5G disaggregated mobile core optimized for public
+cloud deployment in concert with distributed edge clouds and is ideally suited
+for carrier and private enterprise 5G networks. It exposes standard 3GPP interfaces
+enabling use of SD-Core as a conventional mobile core. It is also available
+pre-integrated with an adapter (part of the Aether ROC subsystem) for those
+deploying it as a mobile core as-a-service solution.
+
+SD-Core is an integral component of Aether, ONF’s 5G Connected Edge platform for
+private mobile connectivity and edge cloud services. It can be rapidly deployed
+pre-integrated with Aether, as a standalone 5G/4G mobile core, or as control and
+dataplane (UPF) components integrated into custom designed solutions. This range
+of versatility makes the open source SD-Core platform ideally suited for the
+broadest range of use cases and deployment scenarios.
+
+SD-Core Overview
+----------------
+
+ - Ensure only authenticated mobile devices have network access
+ - Provides IP connectivity for data & voice services
+ - Ensures connectivity adheres to QoS and network slice policies
+ - Tracks user mobility to ensure uninterrupted service
+ - Tracks subscriber usage
+
+.. image:: ../_static/images/SD-Core-Overview.png
+ :width: 700px
+
+SD-Core is an Integral Part of Aether
+-------------------------------------
+
+ - SD-Core is an integral component of Aether, ONF’s 5G Connected Edge platform for
+ private mobile connectivity and edge cloud services.
+ - SD-Core provides the 4G/5G connectivity and the SD-Core control plane at the central
+ site controls multiple SD-Core user plane components running at each Aether Edge site.
+
+.. image:: ../_static/images/Sd-Core-Aether-Integral.jpg
+ :width: 700px