AWS has announced the availability of CloudWatch Application Signals for AWS Lambda functions. This new tool simplifies performance monitoring for serverless applications running on Lambda, eliminating the complexities of manual monitoring. With pre-built dashboards, Application Signals enables users to quickly identify the root cause of performance anomalies. The tool automatically correlates telemetry from metrics, traces, and logs, streamlining troubleshooting. Additionally, users can define Service Level Objectives (SLOs) to monitor specific operations. Application Signals auto-instruments Lambda functions using enhanced AWS Distro for OpenTelemetry (ADOT) libraries, resulting in better performance including lower cold start latency, memory consumption, and function invocation duration. Currently, Application Signals supports Lambda functions using Python and Node.js managed runtimes, with plans to support other runtimes in the near future.