A revealing look at the costs and risks of linking out to CDN-hosted assets for common libraries. This “best practice” may be anything but, especially with today’s ease of setting up CDNs in front of your own content with tools like Cloudflare.

On the practice of linking to 3rd party CDNs, Harry doesn’t hold back:

There are a number of perceived benefits to doing this, but my aim later in this article is to either debunk these claims, or show how other costs vastly outweigh them.