AWS Lambda is a serverless compute service that allows users to run code without the need to manage servers, making it a cost-effective and on-demand solution for various tasks, such as controlling Alexa Skills. This tutorial guides users through creating a basic "Hello World" AWS Lambda function and demonstrates how to deploy updates using a Codefresh pipeline. Initially, users can employ the AWS Console's Inline editor for simple tasks, but as projects grow in complexity, it is advisable to use advanced IDEs and development methodologies, including writing tests, to enhance code quality. The process involves creating an AWS Lambda function, setting up a GitHub repository, and linking it to a Codefresh account for seamless deployments. By establishing a robust release lifecycle process, developers can save time and efficiently detect issues, although it is essential to handle AWS keys securely via pipeline variables rather than embedding them directly in the code.