- Your business is complex, and consistency is a challenge.
- IT is an enabler of business strategy. The effects of inconsistent strategies and priorities are more visible in IT than anywhere else in the business.
- A business capability map enables you to have strategic discussion on business priorities, and to coordinate business planning and execution.
Frankly, if I had to sell business architecture to the CEO, I wouldn't want to do it from an IT perspective at all. My pitch would be based on the following three points.
- Let me show you how the structural complexities in your business may critically affect business performance. (Of course, the details of this argument will look different for different businesses. See my post on Enterprise Structure.)
- Let me show you how you can manage these structural complexities more effectively by thinking architecturally about your business.
- An explicit business architecture will help you coordinate XXX (specific forms of congruence and requisite variety) across all your human activity systems, including management information systems (IT) and management reward systems (HR), and thus overcome YYYY (the structural inhibitors to business performance).
After all, practical business arguments are rarely based on simplistic deduction ("All businesses need X, therefore your business needs X"), so it's not a good idea for enterprise architects to rely on it either. See my post on Architecture and Logic.