Big data has been increasingly considered by experts and company owners due to its direct impact on the development of businesses and companies, so that big data management increases the efficiency of important business decisions. With the increasing use of the Internet and the advancement of information storage technology, there is a vast amount of information that can be used and properly examined. This amount of information is called big data and can be used to make important decisions for the development of a company. All the while, many start-ups and even large corporations are unsure how to use big data. In addition to looking at big data and its role in decision making, this article examines how to properly extract information to support decision making.