SAP Business Warehouse is ships with "Business Content". It comes with ready-made extraction routines, meta-data, InfoCubes, information models, reports and channels that guarantee analysis and reporting capabilities out of the box.
It closes the loop as it provide a seamless links to planning and execution applications that allow you to act instantly on the insight you gain to improve the performance of your business processes.
It openness ensure that SAP BW is ideal for SAP R/3Æ and other SAP solutions but not limited to them. You can combine it easily with practically any internal or external data source, including existing data marts, with third-party reporting and analysis tools, or planning and execution applications.
The flexibility of SAP BW is that it is a ready-to-go solution but easy to adapt. You can modify or add data sources, meta-data, InfoCubes and reports as and when you need to.