An important consideration, when designing a Business Intelligence system within any environment, is a consideration for "where to put the intelligence" among the various "layers" within the system. I have stated many times in the past, in both articles and presentations, that "multi-layered reporting solutions require multi-layered architects," and nowhere is this truer than within the design and implementation of the Microsoft integrated business intelligence solution. This article provides an excellent example of such considerations: the option for placing a needed calculation at either the Analysis Services level (within the cube structure) or the Reporting Services level.