Javascript minification and bundling: JavaScript minification is one of the mechanisms to improve the performance of the web application. When we have 10 JavaScript or CSS files in one folder, if you want references for them in our application then it is not required to reference them individually.
<script type="text/javascript" src="JSscripts/"></script>
<link href="CSS/" type="text/css"/>
It will load all the JavaScript files in the folder and all CSS files in the folder. When we bundle the JavaScript it will not request and load again and again. It will be cached in the client browser. It will generate the GUID for those files and if there is any change in the JavaScript file then it will be automatically loaded and rendered again. The System.Web.An optimization namespace is added.