On 18th December 2013 I presented at DevOps Summit in Bangalore (organised by Unicom Learning Pvt), speaking about the improvements in software operability which DevOps can bring:
One of the goals of DevOps is to make software systems work better in Production, and this characteristic of ‘working well in Production’ is known as operability. Here are the slides I used (available from http://www.slideshare.net/matthewskelton/software-operability-and-run-book-collaboration-29511196):