This document provides an overview of information resource management (IRM). It discusses the history of cryptography and securing information. IRM is defined as the process of managing information as a valuable organizational resource. The components of an IRM system include information resources, facilities, hardware, software, databases, information specialists, and users. IRM provides benefits such as identifying redundant information, clarifying roles, and supporting management decision-making. Adaptive, knowing, and learning organizations especially need IRM to effectively share information. Enterprise resource planning (ERP) systems and the Willard model are approaches for implementing IRM.