React has become one of the indispensable tools of modern web application development. This open source JavaScript library developed by Facebook is used to create user interfaces and is extremely effective in developing single page applications (SPA). React's core approach is based on a component-based architecture; This breaks complex user interfaces into smaller, reusable parts.

This simplifies the development process and makes the code more organized. Additionally, it improves performance by using virtual DOM (Document Object Model) and makes the application run faster. React's large community also provides an advantage in finding support and resources for developers. Therefore, React has become a common choice in the web development world.