The terms "information technology" and "IT

The terms "information technology" and "IT" are widely used in business and the field of computing. People use the terms generically when referring to various kinds of computer-related work, which sometimes confuses their meaning.
What Is Information Technology?

A 1958 article in Harvard Business Review referred to information technology as consisting of three basic parts: computational data processing, decision support, and business software.

This time period marked the beginning of IT as an officially defined area of business; in fact, this article probably coined the term.

Over the ensuring decades, many corporations created so-called "IT departments" to manage the computer technologies related to their business. Whatever these departments worked on became the de facto definition of Information Technology, one that has evolved over time. Today, IT departments have responsibility in areas like

    computer tech support
    business computer network and database administration
    business software deployment
    information security