Key Features of React:

1. Component-Based Architecture:

React follows a modular and component-based architecture. UIs are divided into independent and reusable components, making it easier to manage, update, and scale complex applications.

2. Virtual DOM:

One of React's standout features is the Virtual DOM. Instead of manipulating the entire DOM upon each change, React creates a virtual representation, compares it to the current state, and updates only the necessary parts. This results in faster rendering and improved performance.

3. Declarative Syntax:

React uses a declarative syntax, allowing developers to describe how the UI should look based on the current state. This makes the code more predictable, readable, and easier to debug.

4. Efficient State Management:

React introduces the concept of "state" to manage and track changes in the data over time. State management in React is efficient, making it simpler to handle complex UI interactions.

5. React Native:

Beyond the web, React extends its capabilities to mobile app development through React Native. Developers can use their React skills to build native mobile applications for iOS and Android platforms.