Your question is Structure for High-Volume Payment Aggregation. 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).
How would you structure a system to handle high‑volume payment aggregation while maintaining correctness and reliability?
Discuss the end-to-end architecture, including ingestion, deduplication, aggregation, reconciliation, failure recovery, and observability. Explain where machine learning could assist with anomaly detection or exception prioritization without becoming the source of financial truth. Clarify assumptions as needed.