An IT organization (information technology organization) is the department within a company that's charged with establishing, monitoring and maintaining information technology systems and services.This includes IT administrators, engineers, managers and executives, such as the chief information officer (CIO) or chief technology officer (CTO), who are tasked with planning, implementing, maintaining and updating the IT infrastructure and applications to further the needs of the business and its users.The purpose of an IT infrastructure is to run business applications.Applications.Users.