Update 2: Google has reached out to us with the following statement, "During the event, our top priority was to restore service. We are now turning our attention to understanding what caused the outage; our preliminary diagnosis is that this was caused by a code push which behaved differently in widespread use than it had during testing. If you were affected, we apologize for the disruption this caused. We are calculating the impact to our business customers and will issue SLA credits as appropriate. Full details will follow in our incident report."