This document provides an introduction and overview of Enterprise Resource Planning (ERP). It defines ERP as comprehensive and integrated business application software that supports all functions of an enterprise. The document outlines key concepts of ERP including its comprehensive coverage of business functions and integrated use of a single database. Benefits of ERP are also summarized, such as more efficient resource usage, effective business processes, and ability to deliver better products and services to customers. Various ERP modules are then introduced, including human resource management, financial management, sales and marketing, manufacturing and asset maintenance.