While building on the CloudTop, we needed to verify that the cloud OS really could be used create everything from a presentation application to an Integrated Development Environment (IDE), to applications like mail, calendar, instant messaging, and photo viewer. Was really all the UI components needed to build such complex applications available in XIOS/3 XML languages for developing? Could the CloudBackend Singularity Database really serve the content needed for emails, calendar, photos, and word processing?

Along the way we have built some 30 applications on the platform and feel confident that the concept of applications being developed in XML and executing in XML works. Both from a development perspective, it is convenient to develop these applications and possible to maintain them, but more importantly, that it provides fast enough applications. It would be pointless if we had all the goodness of XML, but the applications became unbearably slow.