Question: You need to setup a mechanism to put controls in place to notify you when you have a spike in Lambda concurrency. What should you do?

1. Deploy a CloudTrail alarm that notifies you when function metrics exceed your threshold. Create an AWS budget to monitor costs.
2. Deploy a CloudWatch alarm that notifies you when function metrics exceed your threshold. Create an AWS budget to monitor costs.
3. Deploy a CloudWatch alarm that notifies you when function metrics exceed your threshold. Create an AWS CostMonitor to monitor costs.
4. Deploy a CloudTrail alarm that notifies you when function metrics exceed your threshold. Create an AWS CostMonitor to monitor costs.

Answer: The correct answer of the above question is Option B:Deploy a CloudWatch alarm that notifies you when function metrics exceed your threshold. Create an AWS budget to monitor costs.