Your question is Security and Compliance by Design. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You are leading the architecture for a new payments engineering initiative. Before design decisions become hard to reverse, you want to make sure security and compliance are built into the plan rather than added during final review.
How do you ensure security and compliance in your architectural designs?