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MEAN (solution stack)
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<p>MEAN (<a href="/facts/MongoDB/9myQKGoY">MongoDB</a>, <a href="/facts/Express.js/EJKbXAL4">Express.js</a>, <a href="/facts/AngularJS/vwI5s4aJ">AngularJS</a> (or <a href="/facts/Angular_(application_platform)/tkAQu3A3">Angular</a>), and <a href="/facts/Node.js/FKzhV4Qa">Node.js</a>) is a <a href="/facts/Source-available/axtrf73j">source-available</a> <a href="/facts/JavaScript/XhhIIEsl">JavaScript</a> <a href="/facts/Software_stack/rPE5Vp8c">software stack</a> for building <a href="/facts/Dynamic_web_page/psjqGKBx">dynamic web sites</a> and <a href="/facts/Web_application/BLkF3BIN">web applications</a>. A variation known as MERN replaces Angular with <a href="/facts/React_(JavaScript_library)/wEllNzoY">React.js</a> front-end, and another named MEVN use <a href="/facts/Vue.js/AojblWPD">Vue.js</a> as <a href="/facts/Front-end_(computing)/QVUfH8gu">front-end</a>. </p><p>Because all components of the MEAN stack support programs that are written in JavaScript, MEAN applications can be written in one language for both <a href="/facts/Server-side/JqukWyaA">server-side</a> and <a href="/facts/Client-side/v7DVfjsH">client-side</a> execution environments. </p><p>Though often compared directly to other popular web development stacks such as the <a href="/facts/LAMP_(software_bundle)/vUeXaEXW">LAMP stack</a>, the components of the MEAN stack are higher-level including a web application presentation layer and not including an operating system layer. </p><p>The acronym <i>MEAN</i> was coined by Valeri Karpov. He introduced the term in a 2013 blog post and the logo concept, initially created by Austin Anderson for the original MEAN stack <a href="/facts/LinkedIn/Iq2IcNMt">LinkedIn</a> group, is an assembly of the first letter of each component of the MEAN acronym. </p>