This document provides an overview of information technology (IT) concepts including the functions and types of IT systems used in organizations. It discusses IT infrastructure, support organizations, and how IT can provide functions like decision support, e-learning, web conferencing, wikis, and electronic directories. It also describes enterprise systems for transaction processing, resource planning, and interorganizational information sharing. The document outlines managers' key responsibilities regarding IT, including identifying opportunities, facilitating adoption, and mitigating risks. It discusses factors influencing IT acceptance and provides examples of various IT risks organizations may face.