This tutorial aims to build a Node.js app with MongoDB Atlas and deploy it using Amazon EC2 Container Service (ECS). The author will cover the basics of Docker, ECS, and coldbrew-cli, an open source automation utility for deploying AWS Docker containers. The tutorial will guide readers through setting up their environment, building the application on their local workstation, creating a MongoDB Atlas cluster, connecting the application to the cluster, and whitelisting IP addresses to store data in MongoDB. The author will also cover securing the app by creating a basic database user with read and write access to the namespace. The tutorial is part of a two-part series, with the first part covering the setup and configuration, and the second part focusing on deploying the application using coldbrew-cli.