This tutorial guides the reader through deploying a JavaScript and Node.js application to AWS Lambda. The author starts by setting up an npm project and creating a 'hello world' application. They then refactor the app to collect and keep friends names in memory, set up a serverless framework configuration, and deploy the application on Lambda environment. The tutorial covers various aspects such as configuring the environment, installing dependencies, and using the Serverless framework to deploy the application. It also touches upon setting up AWS CLI, configuring the serverless.yml file, and deploying the function. The author provides a live demo of the application and encourages readers to build their own projects using this base application.