Need help in finding a related product that I saw demo of

A few days ago I saw a video demo of a product where the organizer starts a cluster of 40 nodes.
You can see these nodes popup graphically on screen.
He then kills one (or a few) and the system automatically starts them back up.

I am unable to find this platform now. I have spent 2 days trying to find it.
Has anyone seen this demo?

Sounds like Mesosphere DC/OS.

Right on spot.
Thank you Michael, That was it. Here is the video I was trying to find