Full Stack Development: What is MERN Stack and it’s Advantages?MERN stack:

MERN stack is a web development framework. Its working components are MongoDB, ExpressJS, ReactJS, and NodeJS. MERN Stack is a Javascript Stack that is used for easier and quicker deployment of full-stack web applications. Each of these 4 great technologies provides an end-to-end framework for the developers to work in and each of these technologies play a huge part in the development of software applications. With these technologies Mongo DB is a database system, Node JS is a back-end runtime environment, Express JS is a back-end web framework and React is a front-end framework.

Components of MERN:

Here are the details of what each of these components is used for in developing a web application when using MERN stack:


MongoDB is a NoSQL database where each record is a document comprising of key-value pairs that are similar to JSON (JavaScript Object Notation) objects. MongoDB is flexible and allows its users to create schema, databases, tables, etc. Credentials that are special by a primary key make up the basic unit of MongoDB. Once MongoDB is installed, users can make use of Mongo shell as well. Mongo shell incorporates a JavaScript interface through which the users can interact and carry out operations like querying, updating records, deleting records.


Express is a back-end web application framework for the Node.js framework. Rather than writing the code using Node.js and creating loads of Node modules, Express makes it simpler and easier to write the back-end code. Express helps in designing great web applications and APIs. Express supports many middleware’s which makes the code shorter and easier to write. As an alternative to writing full webserver code by hand on Node.js directly, developers use Express to simplify the task of writing server code. There’s no need to repeat the same code over and over. The Express framework is considered for building robust web applications and APIs. It’s known for its fast speed and modest structure, with many features available as plugins.


React is a JavaScript library that is used for building user interfaces. React is used for the development of single-page web applications, complex software applicatons, and mobile applications. React can to switch rapidly changing data. React allows the client to code in JavasScript and create UI components. React is an open-source JavaScript library that can be used for creating views rendered in HTML. Unlike AngularJS, React is not a framework. It is a library.


A cross-platform JavaScript runtime environment which was initially built for Google Chrome and later open-sourced by Google in 2008. It’s intended to build scalable network applications and can execute JavaScript code outside of a browser. Node.js provides a JavaScript Environment which allows the user to run their code on the server (outside the browser). Node pack manager i.e. npm allows the user to choose from thousands of free packages (node modules) to download. Node.js works without an enclosing HTML page, in its place using its module system based on CommonJS, to put together multiple JavaScript files.

Advantages of a MERN Stack

The key benefit for developers using the MERN stack is that every line of code is written in JavaScript and JS a programming language that’s used both for client-side code and server-side code. For Full-stack with multiple programming languages, developers have to figure out how to interface them together. With stack developers only need to be proficient in JavaScript and JSON. In general, using the MERN stack enables developers to build extremely efficient web applications.

1. Come with a pre-built extensive suite of technologies tools.
2. The basic building block of React is a component that maintains its state as well as renders itself. A factor summarizes the state of data and view and this is how it is rendered. By splitting an application into components allows the developers to focus on the development and reasoning of the application.
3. Feasibility of four technologies: Mongodb, express, react, node.js.
4. Supports model view controller architecture to make the development process flow smoothly.
5. As React can run on the server, its code can be used on both browsers and servers.
6. All the technologies in MERN Stack are free and open source.
7. Again, MERN stack also covers the complete development cycle – starting from frontend development to backend development.
8. Cover the full web development cycle from front-end development to back-end development using javascript. You need to be proficient in javascript and JSON.
9. MERN stack supports the MVC architecture which makes the development process hurdle free.
10. The MERN Stack comes with a set of pre-built exclusive testing tools.
11. React is a library. React library provides you with the tools to develop your application and you will get com complete freedom to choose from the library’s functions.


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