AWS Lambda, an event-driven compute service, changed the way cloud applications are built, providing opportunities for rapid scaling and development speed. Companies like T-Mobile adopted serverless-first policies to develop mission-critical platforms using AWS Lambda, resulting in a 90% increase in development speed and faster release times. However, performing traces and debugging on deployed functions can be problematic due to the lack of underlying server infrastructure. Optimizing NodeJS Lambda function performance is crucial for ensuring speedy application experiences. This involves identifying unnecessary library usage, allocating sufficient memory, and optimizing service integrations. By applying these methods, developers can improve code execution time, reduce latency, and increase performance, ultimately leading to a better user experience.