Update README.md with primary objectives

README.md

@@ -7,7 +7,19 @@
 
 The meaning of [Naksha](https://en.wikipedia.org/wiki/Naksha)-Hub is “Map-Hub”.
 
+Naksha service, has been designed to primarily offer:
+* GeoJson based REST API as service
+* GeoJson based Java API as library (interacting directly with database)
+* Support Postgres as default Storage system (with inbuilt transactional and history capabilities)
+* Support publishing Data Change events (with atleast-once messaging guarantee)
+* Additionally, Extension framework to provide ability:
+ * to integrate REST APIs with your own custom Storage mechanism
+ * to inject custom business logic as part of REST API request processing pipeline
+ * to inject custom business logic as part of Data change event processing pipeline (subscription based)
+
+
 # Overview
+
 Naksha features are:
 * Organize geo datasets in _collections_.
 * Organize access to your data via _spaces_.
@@ -176,4 +188,4 @@ Your contributions are always welcome! Please have a look at the [contribution g
 # License
 Copyright (C) 2017-2022 HERE Europe B.V.
 
-This project is licensed under the Apache License, Version 2.0 - see the [LICENSE](./LICENSE) file for details.
+This project is licensed under the Apache License, Version 2.0 - see the [LICENSE](./LICENSE) file for details.