This document discusses new features of AWS Lambda including: - AWS Serverless Application Model (SAM) which provides a common language for describing serverless applications across the ecosystem. - Serverless continuous integration/continuous delivery (CI/CD) pipelines using services like AWS CodePipeline and AWS CodeBuild to build and deploy Lambda applications. - Dead letter queues which allow unprocessed events to be sent to an SQS queue or SNS topic to preserve events if the function code has an issue. - Environment variables which can now be used within Lambda functions. - Support for C# and .NET Core runtimes for Lambda functions. - AWS Step Functions which allows orchestrating multiple Lambda