Amazon CloudFront Now Allows Directory Path as Origin Name
For example, if you're using an Amazon S3 bucket as your origin, you can specify bucket-name.s3.amazonaws.com/production instead of just bucket-name.s3.amazonaws.com. Alternatively, if you have a custom web server with different content in different directories on the server, you can use the same physical server to serve multiple types of content via multiple CloudFront cache behaviors or distributions.
これまでいちいちバケットを分けないといけなかったのが便利になりますね。