Read all of the other posts in our series on Creating Azure (hosted) WordPress Websites without knowing php or MySql!
A Content Delivery Network (CDN) service is a network of geographically dispersed servers that have been optimized for distributing cached static files such as images, CSS/JS files and other web app structural components. Website users will receive your website’s cached static content from servers located nearest their geographic location, reducing page load time.
The Azure Content Delivery Network (CDN) caches static web content at strategically placed locations to provide maximum throughput for delivering content to users. The CDN offers developers a global solution for delivering high-bandwidth content by caching the content at physical nodes across the world.