Information technology (IT) refers to the entire industry involving the use of computers and software to manage information. The IT department of large companies is responsible for storing, protecting, processing, transmitting, and retrieving information as needed. Some key careers in IT include software engineers, developers, programmers, systems engineers, IT consultants, and IT managers. IT has transformed many industries and led to numerous job opportunities, especially in software, telecommunications, and electronics. While a bachelor's degree is usually required for IT jobs, postgraduate degrees provide more opportunities for professional growth.