This document provides an overview of AWS Lambda, including its history, supported languages, use cases, performance, pricing, and alternatives. AWS Lambda allows writing code that runs in response to events and automatically manages the computing resources required to run the code. It supports Node.js, Java, Python, and other languages. Common uses include log processing, event stream processing, deployment automation, infrastructure automation, and serverless APIs. AWS Lambda offers an inexpensive serverless computing option with instant availability across regions.