Information technology provides new ways in both commercial and industrial systems. The use of IT systems in business environment can be a top secret. There are four major categories in business environment. These categories are:
• Business functions
• Management functions
• Communication functions
• Enterprise functions

Business functions
These functions allow you to do your work effectively in your office. For example using word processor, spreadsheet, and computer aided design and statistical analysis software work can be done more efficiently. Employees can work and perform their roles by own or in group using these software packages.

Management functions
Management information system or MIS plays an unforgettable and important role in any business organization. MIS is a planned application that is designed to practice data and transform that data into useful information for management decision making.
Every business professional knows that management operates in different levels. So it is possible to apply MIS at all in mixed level. For instance: using MIS in human resource management system, marketing management information systems and financial management information systems.
Communication functions
Communication must be effective within the organization and in outside organizations. For examples: writing emails to blogs, instant messaging, wiki and electronic conferencing. These technologies make possible the fast transfer of information.

Enterprise functions
Examples of this category are customer relationship management software or CRM, accounting software, electronic data interchange or EDI, health care specific software etc.

It is important to understand all these categories and their functions in business background. Information technology plays an important role in every business and it provides a huge range of capability in every business.