MongoDB Atlas, a Database as a Service, allows developers to focus on building their applications while leaving infrastructure management to MongoDB. The Atlas Driver for Node.js provides compatibility and testing tools for MongoDB, enabling developers to authenticate and validate their connections. By creating a basic MongoDB Atlas Cluster, installing the Node.js driver using npm, and configuring a connection string with username and password, developers can test their connections and begin building their applications. With MongoDB Atlas, developers can work quickly and effectively, without having to manage systems hosting their data. The tool provides a guide on how to integrate their application for specific programming languages.