Your question is Managing Schema Changes 24/7. 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 do you handle schema changes in a 24/7 production environment at Intercontinental Exchange?
Explain a practical process for changing database schemas without interrupting production traffic or creating incompatible application versions. Cover backward compatibility, migration sequencing, rollback limits, validation, observability, and emergency response.