> • Most importantly, it makes fallback and load-balancing available for regular people; just spin up an extra web server somewhere else and add it to the DNS,

> • Most importantly, it makes fallback and load-balancing available for regular people; just spin up an extra web server somewhere else and add it to the DNS, just like a secondary MX. Mostly no need for a CDN anymore. That's IF browsers implement this. Browser devs are typically very reticent to add yet more DNS lookups (latency!) to the page loading process.