I was asked to give the one of the keynote addresses to the OpenStack Silicon Valley 2016 conference put on by Mirantis. These types of events are mini-conferences put on in partnership with the local OpenStack user group. The user group gets tickets at a discount that is subsidized by the vendor sponsorships. We generally follow the user group rules of focusing on community works, not selling a product with our talks. This was my third year attending this mini-conference and the first year presenting.
See https://www.openstacksv.com/ and https://www.meetup.com/openstack/ for more details.