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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 (C) 2021 Pantheon.tech
+.. _overview:
+
+CPS Overview
+============
+
+The Configuration Persistence Service (CPS) is a platform component that is designed to serve as a
+data repository for runtime data that needs persistence.
+
+Types of data that is stored:
+
+- **Configuration Parameters**
+
+ These are configuration parameters that are used by xNFs during installation & commissioning. Configuration
+ parameters are typically used before the xNF has been brought up or is operational. For example, a 5G Network
+ configuration parameter for a PNFs that sets the mechanical tilt which is a configuration setting upon
+ installation.
+
+- **Operational Parameters**
+
+ This operational information could be either an actual state or configuration of a network service or device.
+ These are parameters that are derived, discovered, computed that are used by xNFs during run time AFTER the
+ xNF becomes operational i.e. AFTER it has "booted up", been installed or configured. For example, in 5G Network,
+ 5G PNFs may need to adjust a tower electrical antenna tilt. These operational parameters are Exo-inventory
+ information, meaning it is information that doesn't belong in A&AI. In principle, some parameters might be both
+ configuration and operational parameters depending on how they are used.
+
+CPS Project
+-----------
+
+Wiki: `Configuration Persistence Service Project <https://wiki.onap.org/display/DW/Configuration+Persistence+Service+Project>`_
+
+Contact Information
+-------------------
+
+onap-discuss@lists.onap.org