There is no runtime in this model. You run off the Web and you get access to some of the Win10 APIs that are enabled for Web access. I haven't actually played with this, but this would seem to give you the best of both worlds - an application that lives on the Web using HTML technologies, but has access to device features (once authorized).

The integration is what's novel about this (although not that novel - FireFox OS does the same thing but of course no one really uses that).

+++ Rick ---

>Rick,
>
>> Of all the major Vendors out there Microsoft actually has a real strategy for Web apps, with an app model that allows running apps off the Web with access to the Windows 10 device features which is promising as a first step in the direction I'd like to see apps go: remotely hosted and deployable with app store or 'curated' approval to minimize malware.
>
>Could you go into detail how/where the MS model of deployment is better than Java Webstart (as long as you allow for the Java runtime to be expected to be installed) ? The Java App is running as a local process, so all device features available via Java or API call should be possible. Or were you thinking of the Westminster angle of universal apps?
>
>
>curious
>
>thomas