chore(doc): readme product design content updates (#63)

* Update README.md

* Update README.md

* Update README.md

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Co-authored-by: Michael Reimsbach <[email protected]>

README.md

@@ -2,14 +2,41 @@
 
 [![REUSE status](https://api.reuse.software/badge/github.com/cloudoperators/heureka)](https://api.reuse.software/info/github.com/cloudoperators/heureka)
 
-## Overview
 
-Heureka is a Security Posture Management tool designed to manage the security issues in a complex technology landsacape.
+**Heureka** is a Security Posture Management tool designed to manage security issues in a complex technology landscape.
 
-Heureka is commited to empower service owners with a central platform for proactive security management. It seamlessly integrates key components such as advanced patch management, intelligent SIEM analysis, and automated policy enforcement.
+It aims to empower service owners with a central platform for proactive security management by integrating key components such as advanced patch management, intelligent SIEM analysis, and automated policy enforcement.
+
+It is also designed to address the critical compliance aspect as it is equipped with capabilities to track the end-to-end remediation processes, thereby providing tangible compliance evidence. This approach to security posture management ensures a comprehensive and professional approach to maintaining robust security standards.
+
+
+## Value Propositions
+
+**1. Enhanced Visibility and Security Posture**
+
+A holistic view of the technology landscape, enabling proactive identification and tracking of security issues.
+
+**2. Streamlined Security Operations**
+
+Centrally manage security posture, automate patch management, enforce consistent configurations, and improve threat detection with SIEM integration.
+
+**3. Enhanced Compliance, and Auditability**
+
+Facilitate compliance by tracking remediation progress and providing a complete audit trail (evidence) with detailed documentation of state changes and actions taken.
+
+
+## Architecture & Design
+
+For a detailed understanding of the system's architecture and design, refer to the following resources:
+
+- [Heureka Product Design Document](docs/product_design_documentation.md): This document provides a general overview, a glossary of terms, and user personas relevant to Heureka.
+- [Entity Relationship Documentation](docs/entity_relationships.md): This document outlines the core entities within Heureka and how they interact with each other.
+
+**Additional Resources Coming Soon**
+
+- High-Level Architecture Diagrams: These diagrams will provide a visual representation of the overall system architecture, expected to be published before the end of Q3.
+- High-Level Features: A high-level overview of the system's functionalities is also planned for publication before the end of Q3.
 
-It is also designed to address the critical compliance aspect as it is equipped with capabilities to track the end-to-end remediation process, thereby providing tangible compliance evidence. This approach to security posture management ensures 
-a comprehensive and professional approach to maintaining robust security standards.
 
 ## Requirements and Setup