I was surprised to see now that some demonstrations at Wolfram web site run directly inside the browser. i.e. no need to download the CDF file and run it inside player at the computer. It runs as is.
This is new and I have not seen this before. It seems only few demons now can do this (I have links below). When going to such demo page, I see something called "Initializing live version" come up and after few seconds, one can now interact with the demonstrations directly using the browser.
Here is screen shot of one such demo
My question: What is needed for someone to make their CDF run using live version just like the above? Is this technology only used inside WRI or is it available for users of Mathematica as well? And how does it work? Did WRI announce anything about this?
Here are links to some demos I found that uses live version
But most of other demos at WRI website still do not have this feature on them for some reason.