Your question is Deploy a Personalized Ranking Model. 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 shipping a machine learning system that personalizes content ranking in a consumer app. The model performed well offline, but production rollout exposed issues around latency, stale features, and changing user behavior.
What challenges have you faced when deploying machine learning models in production, and how did you overcome them?