Your question is Data Integration Strategy for Migration. 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 design a data integration strategy for a legacy system migration?
Address source assessment, batch and incremental extraction, target modeling, reconciliation, schema evolution, data quality, cutover, rollback, and operational monitoring. Explain how you would preserve lineage and support historical backfills while minimizing disruption to downstream consumers.