Information Technology can be about the processing and movement of data and general running of the enterprise management systems. It can also be about creating products or services or software to sell. Either way, IT is one of the key methods of reducing costs, improving efficiencies, reporting on the business performance, and creating competitive advantages that add value. Consider the iPod, Amazon, Last Minute, and Vodafone. They all use technology to gain a strong competitive advantage.
If you think you have what it takes to manage and lead an IT-orientated business, or take charge of the IT function of a large corporation, then consider an MBA with an IT specialisation.