I'm not sure if the title box has enough characters to explain it properly. Basically it's a PaaS framework that can be hosted on your own environment.
Flynn is a (adjective) PaaS platform that can be hosted on your own servers so you can make it work for you.
Flynn can (verb) as a PaaS platform that allows you to do what you need to within your existing infrastructure.
Flynn runs on your servers as a PaaS platform that you can build upon to (whatever a PaaS does).
I don't really know what PaaSes do, but those should work if you find interesting words (not just generic ones) to put where I've noted. Adding extremely informative details in a sub heading would be very beneficial.
Anyone have any ideas on what to put?