Why use a CDN

Offload media helps to sync the files from the WordPress media library to Amazon S3, DigitalOcean Spaces, or Google Cloud Storage Services. And it rewrites the URL to serve files from the same storage provided. Usually, Offload Media is configured to use raw bucket URLs, So your URL looks ugly and is terrible for SEO. So to overcome this and make the user experience better as well as to better SEO, Offload Media – Cloud Storage seeks the help of CDN(Content Delivery Network), which helps to improve the load times of files hosted on cloud storage 

A CDN refers to a geographically distributed group of servers that work together to provide fast delivery of Internet content. When a user visits your site with a CDN enabled, it decreases the total load time of your site and it reduces the amount of time taken to download static files. A CDN can help you index your website faster on the Search Engine Results Pages. When you configure a CDN then you will get an IP or URL, if you get it point it to the subdomain.