In 2021, Datadog introduced the Lambda extension for monitoring AWS Lambda functions. The company has now developed a low-overhead Rust-based next-generation Lambda extension to address specific needs of resource-constrained environments like Lambda's. By leveraging Rust's reliability, efficiency, and sustainability, the new extension provides faster, more resilient performance with reduced resource consumption, ensuring consistent performance and lower operational costs at scale. The next-gen Lambda extension minimizes cold start latency by achieving memory efficiency without relying on a garbage collector, reducing overall memory overhead and improving function response time.