A year with Opennebula as an alternative to commercial virtualization products

It wasn’t more then 4 months between the first getting in touch with Opennebula and our productive Opennebula cluster beeing fired up. It was a quick decision that turned our to be the absolute right one. Since a little more than a year we are on our evolving way with Opennebula.
So what have we been looking for and why did we end up with Opennebula? How does our setup look like in the moment and what are our future plans with Opennebula? Learnings from a year with Opennebula.