Web Development

Why is MERN stack our preferred platform for Startups apps?

Why is MERN stack our preferred platform for Startups apps?

Are you having a brilliant product idea popping in your mind? But, feeling confused as to which technology or framework to choose. Software development frameworks guide covers everything to help you understand the most popular technologies and frameworks in a bit depth.

The web and app development industry has gone a far level ahead as what it was earlier. Developing a web app provides tonnes of unique and creative web designs to work on. They are all built utilizing 'tech stack' comprising of robust and scalable technologies that are ruling the web development industry nowadays.

For businesses to ensure fast web development and high-level efficiency must have to choose the right tech stack to deliver inevitable web experience to the users. Wondering how? Let's check out!

What is the MERN stack?

MERN stack is a collection of robust and powerful technologies used to develop scalable master web applications, comprising front-end, back-end, and database components. It is a technology stack which is a user-friendly full-stack JavaScript framework for building dynamic websites and applications. This is the reason it is the most preferred platform by startups.

The set of incredible technologies it includes are Mongo DB, Express, React  JS, and Node.js.

MongoDB: MongoDB is an open source, cross platform, NoSql DBMS. It is a document oriented database, which means that data is saved using collections and documents. MongoDB stores the data in binary JSON format that allows the fast exchange of data between client and server. It can also be used for the storage of large volumes of data, which makes it highly scalable.

Express: Express JS is a modular, lightweight framework of the Node JS that helps in building web applications. It is a server side, back-end, JavaScript based framework that is designed to write simplified, fast and secure applications.

React: React JS is an open source JavaScript library used to build user interfaces, typically for single page applications. It offers the facility of code reusability on multiple platforms. It is fast and scalable.

Node.js: Node JS is an open-source, cross platform, JavaScript runtime environment. It is designed to run the JavaScript code outside the browser, on the server side.

MERN Stack Components- A Closer Look

Let's have a sneak peek into the MERN stack components which makes web development all the way easier to do.

MongoDB: A cross-platform document database

MongoDB is a document database in which data is stored in flexible documents with a JSON (JavaScript Object Notation) based query language. The content, size, and number of fields in the documents can differ from one another which means that the data structure can be changed over time. MongoDB framework is best known for its flexible and scalable features. Check out some use cases of MongoDB here.


Here listed down some features of MongoDB:

  • The MongoDB environments are very scalable.

  • MongoDB can run over multiple servers. The data is duplicated to keep the system up and also keep its running condition in case of hardware failure.

  • It supports Master–Slave replication. MongoDB uses native applications to maintain multiple copies of data.

  • It supports MapReduce and flexible aggregation tools.

  • MongoDB JavaScript works well as the database uses the language instead of procedures.

The following points highlight the advantages of MongoDB:

  • MongoDB scales elastically in terms of data volume and throughput. The technology gives you enough flexibility across various data centers with good consistency.

  • The flexible data model with dynamic schema, and with powerful GUI and command line tools, makes it fast for developers to build and evolve applications

  • MongoDB stores data in flexible JSON-like documents, which makes data persistence and combining easy.

  • Costs are significantly lowered as MongoDB runs on commodity hardware. The technology gives out on-demand, pay-as-you-go pricing with annual subscriptions, along with 24/7 global support.

Read also: What Is MongoDB And Why Use It?


  • MongoDB doesn’t support joins like a relational database. Yet one can use joins functionality by adding by coding it manually. But it may slow execution and affect performance.

  • MongoDB stores key names for each value pair. Also, due to no functionality of joins, there is data redundancy. This results in increasing unnecessary usage of memory.

  • To achieve the performance and scalability, MongoDB ditches the transaction support. This makes MongoDB very easy to scale horizontally which utilizes many cheap hardware to balance the load.

Why use MongoDB?

  • It makes all the way easy to index documents

  • Ensure scalability as large data can be handled easily by dividing it into several machines

  • Schema Less as any type of data stored in a separate document

  • It’s really simple to set up a MongoDB environment

  • It supports flexible document-model which is fast to create 

Express: A back-end web application framework

Express is a web application framework for Node.js. The framework simplifies the task of writing server code. For developers, there is no need to repeat the same code, as did earlier with the Node.js HTTP module.

The express framework is designed to build robust and scalable web applications and APIs. It is popularly known for its fast speed and minimal architecture.

Why use Express?

  • Asynchronous and Single-threaded.

  • It is fast and scalable

  • It helps with code reusability using built-in router.

  • Robust API

Read also: Top 10 JavaScript Frameworks In 2020 For Front-End Development

React: Library for building User interfaces

React was developed by Facebook developers. The library is used for developing views in HTML. Instead of using templates to automate the creation of repetitive HTML elements, React uses a comprehensive programming language to built repetitive DOM elements. With this, we can run the same code on both the server and the browser. It completely differentiates MERN from MEAN.

The latest version of React framework is React 16.9. It involves new features, bug fixes, and new deprecation warnings to help prepare for a future major release.


The following features characterize React as a front-end development framework:

  • The virtual DOM is a lightweight copy of the original DOM. Includes all the properties of the real DOM.

  • Supports one-way data-binding which means that the data flows in one direction throughout the whole application. This gives better control over it.

  • ReactJS is component-based. Component logic is written in JavaScript rather than templates, so it is easy to pass the data through the app and keep the state out of the DOM.

React is the most loved web framework, with 74.5% of surveyed developers preferring to develop using it. The corresponding number for Angular is 57.6%, which places it in the 9th position. This report also found that in terms of popularity, React has overtaken Angular. While 31.3% of programmers preferred React, the corresponding number for Angular is 30.7%.



The following points highlight the advantages of React front-end framework:

  • Virtual DOM makes the user experience better and developer’s work faster.
  • It relies on a virtual-DOM and re-render only what has really changed, hence better performance-wise
  • Helps tight binding of values or handling of local variables vs global variables
  • One-direction data flow provides a stable code


The following points showcase the disadvantages of React front-end framework:

  • Integrating with some of the MVC frameworks would require one to be aware of what configuration changes to go through.

  • React technologies are updating and accelerating so fast that there is no time to write proper instruction. To solve this, developers write their own documentation for specific tools used by them in current projects.

  • It uses JSX. It’s a syntax extension, which allows mixing HTML with JavaScript. Developers and designers complain about JSX’s complexity and consequent steep learning curve.

  • The learning curve for the developers is quite high, ReactJS should not be the first one to start with for any new WEB developers.

Why use React?

  • ReactJS supports Components that are basically building blocks of UI where each component has a logic. The components also support code reusability and make the web application easier to develop and understand.

  • Features like Virtual DOM, JSX, and Components make it much faster than the other frameworks.

  • React Native can easily code for Android and IOS apps using JavaScript and ReactJS.

Node.js: A JavaScript runtime environment

Node.js is built on Google Chrome and open-sourced by Google. The framework is built on Chrome’s JavaScript engine. It is designed to develop scalable network applications and also to execute JavaScript code outside of a browser. It works great when enclosed with HTML page instead of using its module.

Node.js 14 replaces Node.js 13 as our current release line. Node.js 14 will be the Current release for the next 6 months, and then promoted to Long-term Support (LTS) in October 2020.


The following features characterize Node.js as a back-end development framework:

  • Being built on Google Chrome's V8 JavaScript Engine, Node.js library is very fast in code execution.

  • Node.js applications never buffer any data. These applications simply output the data in chunks.

  • All APIs of Node.js library are asynchronous, that is, non-blocking. It essentially means a Node.js based server never waits for an API to return data.

  • Node.js uses a single-threaded model with event looping. The event mechanism helps the server to respond in a non-blocking way and makes the server highly scalable as opposed to traditional servers which create limited threads to handle requests.


The following points highlight the advantages of Node.js back-end framework:

  • Node.js is supported by the Google V8 engine which has the power to execute at the same time in the frontend using JavaScript.

  • It is open-source, friendly, and easy to use.

  • Node.js can help you use the web app and the server easily. This is because you have the same code which runs in the server-side end and as well as the same code which runs in the client-side.

  • Powerful server-side applications can be built with Node.js.


The following points showcase the disadvantages of Node.js back-end framework:

  • Node.js’s API or the application programming interface keeps changing continuously. It isn’t consistent at all.

  • Node.js makes you write everything from scratch. It might result in a decrease in productivity, slowing your work down.

  • Node.js doesn’t support multi-threaded programming yet. It is able to serve way more complicated applications than Ruby, but it’s not suitable for performing long-running calculations.

Why use Node.JS?

  • It supports open-source JavaScript Runtime Environment

  • It has a single-threaded model

  • Node.js has a fast code execution as it is built on Google Chrome’s JavaScript Engine

  • It is highly scalable

Read also: JavaScript Development: Everything You Need To Know

Advantages of MERN stack:

MERN is the most popular stack after MEAN. Here are some of the advantages of using MERN stack:

  • It includes the entire web development cycle from front-end development to back end development

  • It facilitates the MVC (Model View Controller) architecture that make the web development process work smoothly

  • MERN is considered a cost-effective stack as with open-source support, accessible set-up and reduced learning time, it may have the lowest development cost

  • With the JavaScript stack, developers only need to be proficient in JavaScript and JSON

  • The four robust technologies are feasible enough to develop a full-fledged software

  • The framework comes with a pre-built extensive suite of testing tools

  • MERN framework helps to build flexible and scalable websites

  • The four technologies provide smooth integration with cloud platforms

mern final (2)-1

Why should Startups hire a MERN developer?

  • The entire web development cycle from front end to back end development using JavaScript come under this

  • Facilitates the MVC (Model View Controller) architecture to make the development process flow smoothly

  • MERN developers only need to be proficient in JavaScript and JSON

  • Facilitates with pre-built testing tools

  • Open-source framework and backed by good community support

Read Also: Top 10 JavaScript Frameworks in 2020 For Front End Development

Key Takeaways

  •  JavaScript supports businesses with high-quality performance and scalability that helps them boost their revenues

  • The robust technologies empower new-aged developers to develop websites with a seamless experience that give users a sense of fullfillment

  • Assist in creating new ideas that can help develop a master product with unique features

  • It diminishes the necessity for context change

Why do Startups choose the MERN stack for development over MEAN?

We already went through all the core components of the MERN stack. Each component has some of the other unique and useful features to offer and it directly affects a Startup agile development process.

Great community:

MERN has built a great community behind it. The reason behind its great community is JavaScript. As a Startup owner, you can always access tons of resources related to MERN or its components. Each one of the components is well-documented and provides scalable solutions. With this, Startups are free-to-play with their ideas.

Full Stack:

MERN offers a full-stack development environment which leads to end-to-end development. With this, Startups do not have to worry about other technologies or tools as they get everything in the stack itself.

MVC Architecture Support:

MERN supports Model View Controller architecture, which makes it easy for developers to develop workflow.

Low learning curve:

MERN is easy to learn and implement. The learning curve becomes easier if the developer is already familiar with JavaScript. The availability of proper tutorials, documentation, and community support also helps new learners in pursuit of expertise.

Pool Of Talent available:

A Startup needs good talent to bring their ideas to real-life. MERN is popular among developers due to JavaScript affiliation. In short, Startups will find no problem finding the talent for their projects.

Open Source:

All the four components are open source, which means that a Startup does not have to worry about licensing problems with MERN.

Testing tools:

MERN comes with its own set of the testing tools suite. So it’s easy for new developers to test the software with the testing tools provided within the framework.



Top Brands Using MERN Stack

React Native, one of the most popular technologies of MERN stack helped the vacation rental company, Airbnb to create an amazing and incredible digital experience and also add additional features in their app. Top IT global leader Microsoft decided to use React for Skype although they had their cross-development tool-Xamarin. And how we can forget the Facebook, they work with this framework and get their event dashboard startup works fast.

Top Global brands using MERN framework:

  • UberEats – UberEats make use of React framework to renovate their restaurant dashboard to make it more appealing and engaging. Developers worked hard to improve the driver’s communication with food outlets. By implementing the demo app permit them to do so. 

  • Instagram –  Instagram also follows the same path as Facebook does and enjoys all the benefits of React functionalities. The developers implemented push notifications to React Native and planted a new option that allows users to save the posts that they found exciting. This framework also helps to execute the Post Promote feature easily. React Native helps you achieve faster startup time and more appealing UX. 

  • Walmart – The experts here executed React Native mobile app to boost their hybrid app performance. With this, 95% of mobile app codebase is shared between iOS and Android platforms.


Business benefits to MERN Stack

Let’s have a walk through some of the benefits of MERN stack that businesses are enjoying today.

  • Incredible User Experience — The user experience of any digital product is vital to its success. React Native app is a fully responsive app as its look and feel.

  • Stability and evolvement — React Native is still evolving and backed up by a huge community. 

  • Developers availability — The developer’s marketplace in React native is robust. You can either hire freelancers using websites like Upwork or talk to agency experts.

  • Less market launch time — React Native boosts up mobile development up to 50% in comparison to native app development so startups can create working MVP even twice as fast.

  • Save Money — Make a wise decision to build a single cross-platform app is a much better economical choice than creating two separate applications for iOS and Android.

  • Save Time — You don’t have to create two separate applications for two separate platforms in React Native. Also, to not display the time you will spend on upgrading and fixing them.

React Usage Statistics:


When to consider choosing React Native?

Selecting the most efficient and perfect fit technology that suits your business requirements in the pool of frameworks is challenging and tricky. But, it may become an easy task when you have a filter based on the project requirements, estimated budget and time.

Consider some key points as when to choose React Native:

  • When you already have native apps and iOS, Android applications, you can migrate easily to React Native, as you don’t need to rewrite the entire code.

  • When you want to scale faster— it’s easy to hire or train React Native developers.

  • When you want to create MVP fast — having a brilliant idea in your mind is not just enough, and you must check it in the real market conditions. Simply put, you need to create an MVP a bit faster.

  • When you have hard deadlines — working in a startup will let you do things fast and quick. It’s not just about building MVP but also about making constant changes and updates with less effort and time.

  • When your budget is tight — having just an idea is not enough for most business persons. You need a product (MVP) with minimal features, but there is a chance that you won’t complete it before running out of money. React Native will help you to minimise the risk of business failure.

Last words

This leads us to the end of our article, where we briefly discussed MERN and then shifted our focus on the benefits and popularity of MERN. All these factors are more than enough to make MERN a viable technology candidate for any startup. Your startup is unique and it requires a solid suite of skills that fulfill your startup's development needs. A smart decision of hiring a full stack developer gives you and your business lucrative opportunities to work with latest talent skills and also to boost revenues.

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Topics : Web Development

Kanika Gupta

Written by Kanika Gupta

Kanika Gupta, a professional tech writer works as a content writer in Classic Informatics, a leading web development company . She loves to write master tech pieces and let readers connect with it fluently.

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