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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.

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.

In the broadest terms, an IT organization is a multifaceted business entity that facilitates almost all aspects of enterprise operations. Although the specific duties and goals of an IT organization vary depending on the size and goals of the enterprise, a typical IT organization involves the following:

IT infrastructure. This includes the servers, storage, networks and other physical components and logical constructs, such as virtual machines or software-defined networks, needed to host applications, store data and connect the infrastructure to users. An IT infrastructure can be implemented locally in a traditional data center, remotely within a colocation facility or public cloud provider, or a mix of these options. The purpose of an IT infrastructure is to run business applications.
Applications. This includes a broad range of software, such as business applications, including databases, human resources (HR) and finance software, design and collaboration software, and business email; all platforms and software designed for users, such as revenue-generating business websites, application programming interfaces (APIs) and applications; the software development toolchain, such as integrated development environments, version control and testing tools; and all tools and platforms the IT organization uses to monitor and maintain the IT infrastructure. All applications depend on the IT infrastructure.
IT staff. 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 growth of DevOps and other Agile software development and deployment paradigms means that developers are increasingly part of the IT organization -- not just as application creators, but also as operations experts who deploy and monitor applications created for the business.
Users. These include employees who depend on enterprise applications for daily work, as well as business partners, customers and client users who provide revenue for the enterprise. Without users, there would be no purpose or benefit to an IT organization.