Moving business intelligence and analytics applications to the cloud (off-premise) can make financial sense but it also carries some particular challenges. As noted in this report on Computerworld UK, it can be hard to define in advance every type of report you want to run using cloud-based data.
"Integrating cloud applications with remaining on-premise BI systems isn't easy, either. CIOs who dawdle when weighing these concerns will likely lose control. Yet the IT group was heavily involved in just 38 percent of off-premise BI purchasing decisions, compared to 57 percent of traditional BI projects, according to a recent survey of 400 business intelligence users by Aberdeen Group."