Currently images are located in /files/ in the root directory. Is it possible to host the images elsewhere?
For example, they are currently hosted on http://www.domain1.com/files/ and I want them to be located at http://www.domain2.com/files/.
And how does the /files/ structure work? What do all the numbers mean?
For example, Wordpress stores their files in /uploads/, then the structure has the year in the uploads folder: /uploads/2016/[images placed here]
And Concrete5 has /files/4557/ and then another random folder.
Yes, have a look at 'storage locations' ../dashboard/system/files/storage