“A decision model is a roadmap and blueprint of a business decision that depicts a holistic view of how a business decision is made. At its core, this blueprint is an executable artifact that uses multiple composite techniques to bring together smaller, more understandable, and self-sufficient decision units. It specifies how a decision is made using the relationship and dependencies between the decision units.

The decision model essentially acts as the coordinator between multiple decision units, passes information in, sends the outcomes of one unit to another, and proceeds until the decision is made. Once the model is defined, then each decision unit in the decision model can use different techniques and technologies such as business rules, AI/ML, data processing, workflow, algorithms, etc.” Link