What is Node.js (The backend service)

Have you heard about MERN Stack?

The MERN stack is a popular framework used for building web applications. 

It's an acronym for MongoDB, Express.js, React, and Node.js, four JavaScript-based technologies that work together to create full-stack applications.

In the MERN stack, Node.js serves as the runtime environment for executing JavaScript code on the server side. It enables developers to build backend applications using JavaScript, facilitating code sharing between the frontend (React) and backend. Essentially, Node.js provides the infrastructure for handling server-side logic and communication with the MongoDB database.

Node.js applications are needed for building fast, scalable, and data-intensive server-side web applications. Its asynchronous nature and large ecosystem of modules make it ideal for high-performance enterprise app development. The technology is particularly well-suited for applications that demand efficient development cycles and robust performance. Many popular applications leverage Node.js due to its speed, scalability, and active community support.