The article provides a tutorial on building a dashboard using React, Express, and Socket.IO to track phone call status. The author starts by setting up the backend with Express and Twilio, then moves on to building the client-side React app that displays and handles the data's state. The app uses Socket.IO to communicate with the server in real-time, allowing it to update its state when a call's status changes. The tutorial covers how to create reusable components, handle state changes, and connect the client's rendering to actual data coming from the server. With this code, the dashboard app is complete, providing a basic example of what can be done with React, and encouraging developers to continue building more complex applications.