The MEAN stack is a modern collection of JavaScript-based technologies used together to develop dynamic, scalable, and high-performance web applications. MEAN is an acronym representing the four main components of the stack:
M – MongoDB
E – Express.js
A – Angular
N – Node.js
The MEAN stack is often compared to the MERN stack, which uses React instead of Angular for the frontend. While Angular provides a complete solution, React allows more flexibility with its "bring-your-own-library" philosophy.