Our program contains four kinds of sessions: presentations, moderated panel discussion, ignites and open spaces. Ignites are short 5 minutes presentations where the slides advance automatically every 15 seconds. Open spaces are where attendees suggest and vote on the topics to be discussed. There will six open space break out areas during each time slot. If you are new to the Open Space concept you can learn more about the format here.
Take a look at the videos from DevOpsDays Toronto 2014 to see how the different formats work.