3.2.9 Request and Response Behavior

https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/RequestAndResponseBehavior.html

The following sections explain how CloudFront processes viewer requests and forwards the requests to your Amazon S3 or custom origin, and how CloudFront processes responses from your origin, including how CloudFront processes and caches 4xx and 5xx HTTP status codes.