Use the Amazon S3 premium integration to configure file fields in forms in WordPress to upload files to a connected Amazon S3 account.
You can choose the bucket path for each file field, and uploaded files remain easy to access from the submissions page. WS Form adds an Amazon S3 file handler for this setup.
The upload path defaults to WS Form/#form_id/#submit_hash/#field_id/. You can also use WS Form variables in the path to make it dynamic.