The document discusses how CO-PA (SAP's Profitability Analysis tool) and SAP BW (Business Warehouse) work together as a powerful combination for profitability reporting. CO-PA provides consistent profitability data while SAP BW allows for advanced reporting and analysis of this data across multiple systems. Some key benefits include separating transactional and reporting tasks to optimize performance, consolidating data from various R/3 systems, and integrating data from non-SAP legacy systems.