MEAN is an acronym for a stack of JavaScript-based technologies used in web application development. It stands for MongoDB, Express.js, AngularJS, and Node.js. MongoDB is a NoSQL database, Express.js is a web application framework, AngularJS is a front-end framework, and Node.js is a server-side JavaScript runtime. MEAN stack allows developers to write both client-side and server-side code in JavaScript, facilitating a smooth development process. It's popular for building dynamic websites and web apps due to its flexibility, efficiency, and the fact that it relies on a single language throughout.
