The tutorial provides a guide on creating real-time dashboards using PubNub and Plotly, allowing users to stream data and display live-updating charts without writing frontend code. It emphasizes the importance of real-time data visualization in various applications, such as monitoring website traffic and analyzing IoT device patterns. The tutorial explains the process of using PubNub to publish data every second to a specific channel, which Plotly then uses to render interactive charts. By utilizing the Plotly Node.js SDK and PubNub's streaming capabilities, users can create dynamic visualizations that automatically update as new data arrives. The guide highlights the flexibility of Plotly in supporting various chart types and its integration with data analysis processes, enhancing the way data is processed and viewed in real time.