Speed, simplicity, configurability no need for a preexisting WP installation. Just drop the installer and archive files to your server, input database information, click 'install' and your site's been moved. It's that simple.

When you configure the automatic backups for the websites on your ser to a cloud based storage.

Being able to completely backup a Wordpress site and uploading it to S3 on a scheduled basis with simple configuration and at a fair price.