React Router DOM: How to handle routing in web apps

React Router DOM is a key library for implementing dynamic routing in React applications, essential for single-page applications (SPAs) where the browser's URL and history must be managed without full page reloads. The tutorial explores how React Router DOM facilitates navigation between components, changes URLs, and keeps UI state synchronized, using components like `<Router>`, `<Link>`, and `<Route>`. It delves into the setup process, including installing React Router DOM, creating basic routes, and handling advanced scenarios such as nested routes, code splitting, and lazy loading to improve performance. The guide emphasizes the importance of the Routes component in React Router v6 for choosing routes based on the best match, and highlights the use of hooks like `useLocation` and `useParams` for more dynamic routing solutions. With examples and updated demos, the tutorial provides a comprehensive introduction to using React Router DOM in web applications, while also addressing more advanced topics like error handling and managing nonexistent routes.