In the “Net Monitor” project, fundamentals were researched and created, whether and how the heterogeneous data sources and operational IT systems of different orientations can be merged in terms of data technology, whether a broad data warehouse can be built from these sources, data mining can be operated on this warehouse and conclusions and visualizations can be derived from a large number of data which, when combined, allow an immensely greater overall knowledge and insight into daily operations than any individual IT system can provide for itself.