MEAN and MERN stacks are very similar. Here, the only difference is that the MEAN stack uses Angular to build the front-end web application, but the MERN stack uses React instead.

Today, this stack is arguably the most popular for new web applications. AngularJS and React are not exactly competing, although React has gained popularity as an alternative front-end technology. It thus replaces the “A” with an “R” in MEAN, to give us the MERN Stack.

React.JS is a lot easier to learn and faster to deploy as compared to Angular.JS for developing small scale applications Because of its flexibility and good support for mobile applications, React.JS is the first choice for mobile app development.

On the other hand, as per my opinion, Angularjs offers a good variety of JavaScript modules from its vast number of libraries. Mean stack allows the developers to write code in only one language which is JavaScript for both client and server-side which makes it a simple and fast language. … Mean is highly flexible.

The result is a lightweight JavaScript application. The key difference lies in the way it is structured. Therefore, the MEAN stack is a better choice for large-scale applications, whereas the MERN stack is the fastest way to develop smaller applications.

Again, choosing between two (MEAN/MERN stack) as a whole relies on the functional and development requirements of the program that need to be devised.

If you are interested to dig deep MEAN Or MERN then I’d recommend reading this article:- https://bit.ly/3BLMesa