Really enjoyed this background of DevOps as a movement to remove friction from a product idea to a feature making it to the end user.  Not focus just on continuous delivery, not focused on specific tools.  Worth listening to for anyone who cares about how to increase the velocity and quality of software releases

http://softwareengineeringdaily.com/2015/08/31/origin-of-devops-with-john-and-damon-from-devops-cafe/