The document discusses how companies can leverage external data sources to make better business decisions faster. It provides five best practices for using external drivers: 1) Put in an early warning system, 2) Use leading indicators, 3) Compare results versus peers, 4) Eliminate risks of manual data entry, and 5) Use external drivers for more accurate forecasts. It also discusses how historical challenges around lack of integration and real-time data can now be addressed through cloud-based solutions that aggregate both internal and external big data sources. Finally, it provides three case studies of how companies have benefited from applying these practices.