Rollbar has updated its JavaScript and Python libraries to facilitate error monitoring for applications running on AWS Lambda, a popular serverless computing service. Serverless architectures, like those enabled by Lambda, allow for automatic scaling and payment based on actual resource usage rather than pre-allocated compute resources. However, Lambda functions have limitations such as concurrency execution limits, which can lead to function throttling and errors if exceeded. To address these challenges, AWS Lambda uses Cloudwatch for basic monitoring, but Rollbar offers a more comprehensive error tracking solution, providing detailed stack traces, event tracking by browser and IP address, and affected user information. The updated Rollbar.js library now includes a lambdaHandler function, and the pyrollbar library has been enhanced to support Python on Lambda, encouraging users to try these tools and provide feedback or contributions via GitHub.