The text discusses the integration of real-time push notifications into web applications using PubNub's React SDK, highlighting the importance of enhancing user engagement and experience. It outlines the process of setting up a React project and using PubNub to manage real-time notifications, which can significantly increase user interaction by delivering timely updates directly to users. The implementation involves setting up a connection with PubNub channels via publish and subscribe keys, and creating a notification function that checks browser compatibility and requests permission to show notifications. The text emphasizes the potential for real-time notifications to boost user engagement and conversions by making web apps more interactive and responsive, and suggests further enhancements such as background notifications through service workers.