The text discusses how to use YouTube APIs with React, a JavaScript framework that simplifies the process of making complex, interactive websites and web apps. To build a YouTube React app, one needs to setup a new React app using Create React App, subscribe to the YouTube Search API, test the API endpoint, copy the JavaScript code, replace the React app component, add CSS styling, and try it out. The author provides a step-by-step guide on how to use the YouTube API in React, including setting up the API, making API calls, handling responses, and displaying search results in a user-friendly format.