Your question is Migrating Legacy Frontend Safely. 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).
If you were tasked with migrating a legacy frontend surface to a modern stack, how would you minimize downtime and risk?
Explain how you would assess the existing surface, define a migration strategy, coordinate engineering and product stakeholders, validate functional parity, and plan the rollout. Describe the trade-offs between a full cutover, incremental migration, and parallel operation. Include your approach to testing, observability, rollback criteria, communication, and post-launch ownership.