Product Page: https://scand.com/products/epubcloud/
EpubCloud is a combination of the Cloud Storage and EPUB Reader that allows hosting, storing, and sharing EPUB files for their further reading from various devices, including desktop and mobile. The Cloud Storage is designed for the AWS-based EPUB book hosting with the ability to upload your own books in the EPUB format. Depending on your plan you have an opportunity to get additional options. The service might also cover DRM support and integration with corporate services and custom billing if needed.