Asynchronous operations are integral to modern web applications, and React 18's introduction of the Suspense feature enhances the handling of async rendering by allowing components to "suspend" and display fallback content, such as a loading indicator, until data fetching or other async tasks are complete. This approach improves perceived performance by rendering parts of the UI immediately while awaiting data, offering a seamless user experience. Suspense, when combined with React.lazy(), can optimize performance by loading components only when needed, and it supports revealing content all at once or nested content as it loads, thus preventing the waterfall effect. Functional components, which are central to React development, can leverage Suspense to manage async operations more efficiently, overcoming the limitations of useEffect, which can block entire component trees. The document also includes practical examples, such as fetching and displaying TV show data using Suspense, and compares this method with traditional async rendering techniques using useState and useEffect.