Building IT systems supporting information flow, IT data storing and transforming, integrating various corporate activities is a challenge for many enterprises. Corporate IT system is a data transforming system (defined in terms of time and space). It consists of deliberately united elements such as data sources, data storing and transforming, the information channels, material means and people involved in data transfer and IT destinations. Changing environment, growing clients' expectations and competition force enterprises to increase efficiency. The decision-makers demand current useful information concerning enterprise's internal position to eliminate risk and enable them to make right choices. It is more and more difficult since the number of economic operations grows. It is increasingly difficult to analyse and transform data. Immediate access to data is also important in managing distant economic units. It enhances building complex IT systems. The author researches overall view on economic organisation from both economic and industrial perspective. The author also researches economic and industrial problem solving and IT support in the context of IT technology.