About

CDN stands for Content delivery network. It is a distributed system of servers deployed in multiple data centers.

Some CDNs are read-only, Google Hosted Libraries for example, others can be used to store your site’s files, like Amazon CloudFront.

Do not use read-only CDNs to replace JavaScript files included in WordPress. There are often important differences between the external code and the version WordPress uses.

To use a CDN for your own files you will need a plugin.

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