The best part about MERN that there is a single language used everywhere. We use JavaScript for client-side code and server-side code. Even if you have database scripts (in MongoDB), you write them in JavaScript. So, the only language you need to know and be comfortable with is JavaScript.

In addition, when using the MERN stack, object representation is JSON (JavaScript Object Notation) everywhere – in the database, in the application server and on the client, and even on the wire. I have found that this often saves me a lot of hassle in terms of transformations. No Object Relational Mapping (ORM), not having to force-fit an object model into rows and columns. No special serializing and de-serializing code. An Object Document Mapper(ODM) such as mongoose may help enforce a schema. Make things even simpler, but the bottom line is that you save a lot of data transformation code.

In fact, due to its event-driven architecture and non-blocking I/O. The claim is that Node.js is very fast and a resilient web server.

Although it takes a little getting used to. I have no doubt that when your application starts scaling and receiving a lot of traffic. This will play an important role in cutting costs. Savings in terms of time spent in troubleshooting server CPU and I/O problems.

Therefore, I’ve already discussed the huge number of npm packages available freely for everyone to use. So, any problem that you face that you think others should have faced too. You’ll find that there is an npm package for that. Even if it doesn’t fit your needs exactly as well as you can fork it and make your own npm package.