Using Amazon S3 Origins, MediaPackage Channels, and Custom ...
https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/DownloadDistS3AndCustomOrigins.html
When you create a distribution, you specify where CloudFront sends requests for the files. CloudFront supports using several AWS resources as origins. For example, you can specify an Amazon S3 bucket or a MediaStore container, a MediaPackage channel, or a custom origin, such as an Amazon EC2 instance or your own HTTP web server.
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