Your question is Troubleshooting Production Issues. 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).
What process do you follow for troubleshooting a major production issue? Explain how you establish incident ownership, assess impact, stabilize the service, communicate with stakeholders, identify root cause, validate recovery, and prevent recurrence. Include how you make decisions when information is incomplete and how you balance rapid mitigation against deeper investigation.