Digital Revolution leads companies to invest and focus their attention on leveraging the potential of digital technologies. Baker Hughes Company, in Energy Technology industry, is driving its digital transformation investing in new technologies or improving the existing ones. The objective of this thesis project is the study and the development of an application Data Lake to support the Repair Service Team of Baker Hughes. Repair Process is fully tracked on an internal web application, called Repair One Portal (ROP) and all its data are stored in a relational database. Data Lake is an emerging alternative system to the Data warehouse. It answers the need of extracting information from different kinds of data in a flexible and not expensive way.