How does the MERN Stack Work ?

The MERN stack enables easy development of three-tier architecture (frontend, backend, database) using JavaScript and JSON.

• MongoDB: MongoDB is a NoSQL database that stores data in a JSON-like format. Its flexible schema and scalability make it an excellent choice for handling large volumes of data, especially in applications where the data structure is subject to change over time.
• ExpressJS: ExpressJS is a minimalist web application framework for NodeJS. It provides a robust set of features for building web servers and APIs, making it easier to handle routing, middleware, and HTTP requests in NodeJS applications.
• ReactJS: React is a JavaScript library for building user interfaces. Developed by Facebook, React allows users to create reusable UI components that efficiently update and render data changes. Its component-based architecture and virtual DOM make it ideal for building interactive and responsive web applications.
• NodeJS: NodeJS is a server-side JavaScript runtime built on Chrome’s V8 JavaScript engine. It allows users to run JavaScript code on the server, enabling them to build scalable and high-performance web applications. NodeJS provides event-driven, non-blocking I/O operations, making it well-suited for handling concurrent requests in real-time applications.

In web development, the MERN stack is one of the most popular, robust, and versatile technologies by which you can create dynamic and scalable web applications. Comprised of four key technologies – MongoDB, Express.js, React, and Node.js – the MERN stack offers a complete solution for full-stack web development.