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You are a DevOps engineer responsible for maintaining a serverless machine learning application that provides real-time predictions using AWS Lambda. Recently, users have reported increased latency when interacting with the application, especially during peak usage hours. You need to quickly identify the root cause of the latency and resolve the performance issues to ensure the application remains responsive. Which combination of monitoring and observability tools is the MOST EFFECTIVE for troubleshooting the latency and performance issues in this serverless application?