[jshawl]

>Meanwhile, if your caching reverse-proxy goes down, you have the option to immediately put a different caching service in front of your site, or temporarily serve static content from your servers directly, and get things working again with no code changes or backend deployments required

I think I'd prefer deploying a new CDN link to updating DNS. "No code changes or backend deployments" makes the assumption that DNS is a manual change (not terraform, etc.)