This document provides a summary of HPCC Systems, including: 1. A brief history and overview of the architecture with a use case example of calculating insurance policy data within a specified radius. 2. Descriptions of the main components of HPCC Systems - Thor for batch processing, Roxie for real-time queries, and ECL as the data-oriented programming language. 3. Information on how HPCC Systems can be integrated with other systems and technologies through connectors, drivers, and the ability to embed other languages.