From what it appears, Cloudfront Path Pattern doesn't support complete regex.
What I want to achieve is to separate the requests /[a-z]* from the requests /[a-z]/.+ to different origins.
So, a request /page must have a different behavior from /page/something. And I can't seem to figure out a way of doing this.
Best Answer
Put
/*/*earlier in the path order (lower sequence number) and/*later in the list.CloudFront uses first match, not best match and
/*/*won't match anything without at least one slash in the middle of the path. Of course, the default behavior may make the second entry unnecessary.