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Migrate Legacy to Cloud Data

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Your question is Migrate Legacy to Cloud Data. 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).

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Problem

How would you migrate a legacy data system to a modern cloud architecture at Barclays?

Explain how you would assess the existing platform, select a target cloud architecture, and migrate batch and streaming workloads without disrupting downstream consumers. Cover phased delivery, data quality, security, lineage, reconciliation, backfilling, dual running, rollback, and operational handover. Treat the response as a practical migration plan and identify the decisions, risks, and validation evidence required before cutover.