React uses a virtual DOM (Document Object Model) that makes updates to the UI more efficient by only updating the components that have changed, rather than re-rendering the entire page. This results in a smoother and more responsive user experience.
React follows a component-based architecture, which allows developers to break down a complex web application into smaller, reusable components. Each component can have its own state and behavior, and they can be easily composed to create a more complex UI. React also allows developers to easily handle the flow of data through the application using a technique called "unidirectional data flow".
React is widely used by many companies and organizations, it's also compatible with most of the modern web browsers and it's supported by a large and active community, which makes it easy to find support and tutorials online. It also has many libraries and frameworks that can be added to the project, such as React Router, React Redux and Next.js, making it a flexible solution for different needs.