UNKNOWN
Source
CloudSploit
ID
cloudfront-enable-origin-failover

CloudFront Enable Origin Failover

Ensure that Origin Failover feature is enabled for your CloudFront distributions in order to improve the availability of the content delivered to your end users.

With Origin Failover capability, you can setup two origins for your CloudFront web distributions primary and secondary. In the event of primary origin failure,

Modify CloudFront distributions and configure origin group instead of a single origin