The final work describes how information technology drastically affects profitability. It is one of the key generic technologies which enables the efficient operation of the organization and their competitiveness in the market. Information and knowledge are two fundamental resources for successful business. The function of information system was reviewed in four major business areas: finance, accounting, marketing and production. This clearly shows that the computers are increasingly used in business communication. Communication transmitted to the computer replaced a significant part of the information exchange by regular mail, telephone and even face to face meetings. There is much competition in the business, the organization is always trying to be one step ahead and even frequently change business models. More and more is sold '' intelligence '', rather than raw materials or supplies. The accuracy and quality of information, as well as proper communication are very important for making decisions and for integrated logistics system.