Your question is Real-Time Ingestion System 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).
Design a scalable system to handle real-time data ingestion and processing.
Clarify the workload, freshness and latency requirements, data quality expectations, and downstream processing or ML use cases. Explain how the system scales, handles failures and reprocessing, and is evaluated and monitored in production.