Owing to the self-improvement desire, the human being always tries to reach to the current information and generate new ones from the data on hand. The practices are realized by processing and transforming the data, whose existence is broadly accepted, into information. Generating information from data is vitally important in terms of regulating the life. Especially firms need to store and transform data quickly and properly into information in order to achieve the objectives such as having a competitive edge, producing new products, moving the firm ahead and stabilizing the internal dynamics. The increase in the amount of data sources also increases the amount of the data acquired. Therefore storing and processing data become difficult and classical approaches remain incapable to do such transactions. By means of Big Data large amount of data with a wide range can be stored, managed and processed. Besides Big Data ensures proper information quickly and offers advantage and convenience to the firms, researchers and consumers by taking the properties of Volume, Value, Variety, Veracity and Velocity into consideration. This study consists of 5 parts. In the Introduction part the features, classification, the process, the areas of usage and the techniques of Big Data are explained. In the second part the appearance process and the advantages of the concept of Big Data are illustrated with examples. A detailed literature review is produced in the third part. The actual studies and the most interested areas of Big Data are told in this part. In the fourth part the future of the Big Data is evaluated. Besides the situation and distribution of the studies on Big Data in Turkey and all over the world is presented. In the Conclusion part, an overall assessment is included and probable troubles are mentioned. (C) 2015 The Authors. Published by Elsevier Ltd.