Revolv was a monitoring and control system that allowed users to control their connected devices from a single hub. Launched May 2, 2012; shut down May 15, 2016 — it lived 4 years. One of 21 Google products killed in 2016. https://www.zdnet.com/article/revolv-is-dead-google-killed-it-long-live-innovation/ Data: Killed by Google (killedbygoogle.com, MIT).