Hey!
S3 has a feature where you can make your amazon s3 urls to custom urls.
EX. Instead of using this link, https://counterstrikeio.s3.amazonaws.com/3e2750d7b4768d2650c1d67671718805cf462eca1.png, you use a link like https://images.counterstrike.io/3e2750d7b4768d2650c1d67671718805cf462eca1.png
Documentation:
http://docs.aws.amazon.com/AmazonS3/latest/dev/VirtualHosting.html#VirtualHostingCustomURLs