React Integration is the process of integrating React into existing web applications. React is a JavaScript library for building user interfaces. It is used for developing single–page and mobile applications. It is a declarative, efficient, and flexible JavaScript library for building user interfaces. Integrating React with existing applications can be complex and time–consuming, but it is necessary to bring the benefits of React to existing projects. React integration can be done in two ways:

1. For existing applications, a new React component can be added to the existing application. This is done by adding the React code to the existing application and then configuring the React component.

2. For completely new applications, React can be integrated into the development process. This involves setting up a React project and configuring it to work with the existing application.

For either approach, there are several steps that need to be taken to ensure successful React integration.

1. Set up React environment: Set up the React environment by installing Node.js and the React development tools. This will allow you to use React for development and testing.

2. Configure React components: Configure the React components to work with the existing application. This includes setting up the component’s props and state, as well as creating the component’s render function.

3. Add the React component to the existing application: Add the React component to the existing application. This involves including the component’s code in the existing application code and configuring the component to work with the other components in the application.

4. Create a React project: Create a React project to contain the React components. This will allow you to deploy the React components to the server and make them available to the application.

5. Integrate React into the existing application: Finally, integrate React into the existing application. This involves adding the React components to the existing application and configuring them to work with the existing application. React integration can be a complex process, but it is necessary to bring the benefits of React to existing applications. By taking the time to properly integrate React into an existing application, you can ensure that the application is efficient, scalable, and maintainable.