Leveraging the real value of all data is not an easy task. Organizations compile and store data from multiple channels, stored in different information systems, from heterogeneous environments, and in different formats. Direct and real time access to data and the efficient management of this data is a growing concern. The scale of the problem is such that it can lead to the downfall not only of ICT projects, but also of strategic business initiatives and even companies. An organization´s data integration layer is a critical component and there is a tendency to be overly optimistic about its situation. This case study analyses R - a leading fiber-optic communications provider in Spain — and the implementation of data virtualization, and demonstrates how the initial investment is quickly leveraged with demonstrable ROI in less than 1 year.