David Lloyd of Virtual Outlands comments:
Photon Controller is a replacement to vCenter focused on the operational requirements of the container workloads, not virtual machines. Why you may ask? An easy way to think about it is the rate of change and scale that us usually associated with a container aligned environment versus the long term service life and different scale models associated with traditional Virtual Machines drives a different model.
If you are all in for containers, or alternatively, have a substantial container footprint today (or will soon) you have some considerations when assessing VIC versus Photon Platform:
Hopefully David will help you get past some of the initial hangups of installing VMware Photon.
Read more at: VMware Photon Platform, Notes from the Field – Entry One