What is a CDN?
CDN stands for Content Delivery Network, but that’s probably not any more helpful than what you already know. From the physical side, a CDN is a bunch of servers, located at strategic points around the world. Still not helping? Alright, let’s talk about what you gain from a CDN.
A website is built with more than just a plain HTML page. Any given page has CSS files (style sheets), JS files (JavaScript), probably images, and maybe even custom fonts. The average site has over 80 different files that the visitor’s browser needs to download. We usually call these “static resources”. In other words, they are files that don’t change frequently.
While a high-quality webhost will take steps to make sure those 80 files load pretty quickly, the average webhost does no such thing. As a result, those 80 files will take way longer to load than they need to.
Reference link
https://ewww.io/2020/01/08/do-i-need-a-cdn/
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