Applications Development with React and Node, often referred to as MERN Stack development, involves building web applications using a combination of key technologies: MongoDB (as the database), Express.js (as the backend framework), React.js (for the frontend), and Node.js (as the server-side runtime).

Applications Development with React and Node in the MERN Stack involves using MongoDB for data storage, Express.js for backend development, React.js for building dynamic frontends, and Node.js as the server-side runtime. This technology stack is popular for creating modern, efficient, and scalable web applications.