Your question is Prevent AWS Lambda Cold Starts. 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 prevent an AWS Lambda from cold starting?
Keep the answer practical: explain the AWS-native options you would use, the trade-offs, and what you would monitor to prove the fix works. If you would not eliminate cold starts entirely, say how you would reduce them and bound the impact.