BI is comprehensive and flexible. A single, correctly designed cube can actually contain all of an organization’s data, and importantly, this cube will present that data to end users consistently.
The ability to be comprehensive is best expressed by the various enhancements in SSAS OLAP cubes related to scalability. These include storage and backup compression, query optimization, and many more. These days, it’s common to see multiterabyte cubes in production. This will result in reduced data storage and maintenance costs, as well more accurate and timely business information. It will also result in improved information worker productivity, as end users spend less time getting the right or needed information.