How your organization makes decisions drives the rest of the business environment - processes, events, data and the org-chart. A decision-centric view of Business Architecture is an essential organizing principle to deal with the data-driven, knowledge-based economy of the times.
First, clarify the 'modern' view on Business Architecture
There is no generally accepted definition or common understanding of business architecture because it is essentially a set of 'views', 'perspectives' or 'lenses' that consider how a business operates. Some views are common, like a process-based view - and others not as much, like an event-based view. The choice of business architecture views to be created and managed is generally dependent on current business priorities or concerns. And this practical approach to business architecture is certainly appropriate and prudent.