Their tagline: AWS Lambda monitoring, alerting and debugging made easy. 2-min setup, no code changes!
Automated monitoring & troubleshooting for serverless applications, using tracing and logging. Free tier available.
IOpipe is a tool and service that helps you instrument and monitor your functions in dev and production. Free tier available for smaller projects.
Their tagline: Full observability for AWS Lambda. Instrument and profile your functions with zero overhead. Gain visiblity to identify and resolve issues faster.