Overarching: Business: What is the nature of the business and how do ICS systems support it?

Options:

Describe the business at a basic level. What business are you in? How does the business work?

Decisions:

What is the nature of the business and how do ICS systems support it?

Basis:

The business you are in defines and underlies everything else about protective needs, and the linkage between the business and the ICS systems is key to understanding what the architecture will ultimately look like.