Datadog has expanded its AWS Lambda integration to provide customers with enhanced visibility into their serverless functions, including real-time metrics and metadata collected at higher granularity than standard CloudWatch metrics. The new integration offers features such as alerting on errors in real time, tracking cold starts, estimating costs, and monitoring memory usage. With this enhanced integration, developers can gain deeper insights into the performance and resource utilization of their serverless functions, allowing them to optimize cost efficiency and troubleshoot issues more effectively.