Your question is Scalable and Maintainable Solution Execution. 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're designing a new solution that is expected to grow over time, and you want to avoid creating something that becomes expensive to operate or hard to change after launch.
How do you ensure that your solutions are scalable and maintainable?