Amazon’s S3 file hosting service is a scalable, easy place to store files for distribution. You can find out more about it at aws.amazon.com/s3 To use Paperclip with S3, include the aws-sdk-s3 gem in your Gemfile: gem 'aws-sdk-s3' There are a few S3-specific options for has_attached_file: s3_credentials: Takes a path, a File, a Hash or a Proc. The path (or File) must point to a YAML file containin