The most valuable is information. Information is data. We know, how optimally use the data that we have. Broadly defined Big Data allows us to work with an unstructured data. In addition, we can process them in a Cloud Computing model, which will reduce the Bank’s costs and will make better use of an available resources. The project which is a merger or an acquisition also requires the ordering of data – both system and Client’s. It is a huge challenge, which may, however, be successful and the investment will return.