James Taylor and Neil Raden wrotea pretty good white paper on Enterprise Decision Management. I really like the informative contents of the paper which clarifies how the concepts relate to each other, the different layers of technology, etc. Great paper on the topic
It provides details on the technology used for operational decision making, introducing the available technology types and discussing what makes a technology product suitable. It also details the risks and issues involved in adopting Decision Management. How these risks might be mitigated is outlined, and an adoption scorecard to help select appropriate uses is proposed. A reference architecture and some definitions of terms complete the paper.
The original article can be found at the following link (registration required)