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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+Architecture
+============
+
+Repositories
+------------
+CCSDK contains the following repositories to support service logic (aka directed graph)
+development:
+
+- ccsdk/parent : contains parent poms, which contain common properties, plugin settings, etc
+- ccsdk/sli/core : contains the core components needed to compile and execute directed graphs
+- ccsdk/sli/adaptors : contains adaptors to provide access to resources from within directed graphs
+- ccsdk/sli/northbound : contains code for northbound interfaces that maybe used by CCSDK clients
+- ccsdk/sli/plugins : contains code to be called from directed graph "execute" nodes
+
+Capabilities
+------------
+Provides the core Service Logic Interpreter (SLI) functionality, used to execute directed graphs (DGs).  Directed graphs allow service designers to define the
+logic to be executed within the SDN controller in a graphical format which can be
+updated in real time, without a need to restart the controller.
+
+.. toctree::
+   :maxdepth: 1
+
+   nodes.rst
+
+