This document provides an overview of the history and evolution of information systems and technology. It discusses how computers originally focused on business and defense uses before personal computers became common. Local area networks then allowed people to work together and share information. As technology advanced, larger organizations developed internal IT departments to manage systems and purchase software to coordinate business processes. Information systems are now critical to supporting business operations and management decision making through tools like databases, business process management systems, and decision support systems. When combined with changes to organization and management, information systems can provide a strategic advantage through optimization of costs and processes.