Your question is Design a Real-Time Prediction Platform. 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 designing the prediction layer for a product that needs to score user or transaction events in real time. The system must serve predictions quickly, keep features fresh, and support model updates without disrupting traffic.
How would you design a scalable machine learning system for real-time predictions?