MEAN is a full-stack JavaScript software stack used for building dynamic web applications. MEAN stands for:
MongoDB: A NoSQL, document-oriented database.
Express.js: A server-side framework for building web applications.
Angular: A front-end JavaScript framework for building web applications.
Node.js: A server-side JavaScript runtime environment for executing JavaScript code on the server.

One of the prominent advantages of using MEAN stack is that the whole code is in JavaScript. So, it is easy for beginners to explore and learn. Also, its unified offerings can significantly reduce development time and cost. The MEAN stack contains various supporting libraries and reusable modules which deliver a scalable minimum viable product.

Working of MEAN stack:

The MEAN stack architecture is used to build web applications in JavaScript, and handling JSON, incredibly easy.

Angular.js front end:

Angular.js is at the top of the MEAN stack. It is a self-styled “JavaScript Framework”. Angular.js allows you to extend your HTML tags with metadata to create dynamic, interactive web experiences in much more powerful ways.

Express.js and Node.js Server Tier:

Express.js is the next step of MEAN stack, running on a Node.js server. Express.js is a fast, minimalist web framework for Node.js. Express.js has powerful models for URL routing and handling HTTP requests and responses.

MongoDB Database Tier:

If we need to store any data, then we need a database like MongoDB. JSON documents created in Angular.js front end are sent to the Express.js server, where they are processed and stored directly in MongoDB for later retrieval.

Advantages of MEAN stack:

Full-stack JavaScript: MEAN uses JavaScript for both client-side and server-side development, making the development process more efficient and streamlined.
Community support: Angular, one of the components of the MEAN stack, has a large community of developers who contribute to its development and improvement.
Scalability: The MEAN stack is capable of handling large and complex applications, making it a great choice for building scalable web applications.
Testing: Angular provides built-in testing tools that make it easier to test the application during development.

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