Your question is Improving a Legacy System Architecture. 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).
Tell me about a time you improved the architecture of an existing system rather than building something new. How did you identify what needed to change, influence others to adopt the new direction, and balance the architectural improvements against delivery pressure?