State of On-Call 2015
victorops.com/wp-content/uploads/2015/12/VictorOps-InfoGraphic-Final-2.pdf
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
The clear signal over the last year has been the death of operations as the lone protectors of highly technical infrastructures and systems. More and more organizations are placing developers on the front line of rapid response and resolution of technical problems. Alerting ‘someone’ to a problem is no longer acceptable and we are seeing this in many companies as they dismantle their Network Operations Centers (NOCs) in favor of routing specific system problems to the engineers that built the part of the system having issues.