These days, one of the fastest developing area of business activities is IT outsourcing. This term is widely knowns between all managers in most prominent organizations. A while ago this became pretty clear, that outsourcing might be one of the key factors to have highly lucrative business. Because of that, there are many outsourcing companies present on the market those days. The competition is really high – there are plenty of already existing companies, that have rather big experience already, (for example widely known objectivity ltd), as well as plenty of newly opened, which are doing their best to be visible on the market. As a result of that rough competition, the level of offered services is extremely high. Nevertheless, it seems to be useful to have a quick insight into reasons why outsourcing firms becoming so attractive. Thanks to that, it may be easier to either make a decision if it is worth to use such services in a company.