The key features of React are: 

• It enables server-side rendering. 
• It will use the virtual DOM instead of the real DOM (Data Object Model) because real DOM actions are expensive.
  • By keeping DOM in memory, also known as virtual DOM, React provides incredibly fast rendering of components. Internally it checks for all the required changes to be done in the DOM and makes these changes in the most optimized manner.
• It uses unidirectional data binding or data flow. 
• The view is built using reusable or composable UI components.
  • React allows us to design independent reusable components. Each component may have its own logic, rendering rules, and functionality. All of these components are then combined into a larger component. 
  • They can be utilized throughout the application. All of this simplifies the development process and makes the program more scalable and stable. The application can be simply debugged.
• Hooks: Hooks are a functionality added in React version 16.8. It enables developers to add state and other features to functional components. Hooks simplify application state management. The functionality of React Hooks allows you to simply transfer data between components and group logic.
• Global State Management: This is implemented to facilitate the exchange of data among various components. Everywhere, global state administration is essential. For instance, a global state is a user state that has been authenticated. It is imperative to retrieve and modify the user's data throughout our application when they are either logged in or logged out. Redux, Context API, and libraries such as Zustand and Jotai are among the various tools that are available for this purpose.