In Part I of the SSAS Tabular vs. SSAS Multidimensional – Which One Do I Choose? series, we began to set the stage for looking at 5 high level considerations to answer this question. In Part II, we explored the Scalability and Performance considerations between the two technologies. In Part III, we explored the characteristics of the data and the model required to deliver the analytics and reporting required. In this installment, we will cover how to extend the capabilities and characteristics of your data model through the use of business logic.