Google officially explains what caused Monday’s 47 minutes outage. The cause was “an internal storage quota issue.”

I haven’t the faintest clue about what that means in layman's terms. However, thank goodness! I can now assume that the incident wasn’t prompted by a solar plasma outflow originating from Coronal Mass Ejections (CME), causing a massive geomagnetic storm that ionized Earth’s atmosphere. Similar to a high-altitude electromagnetic pulse (HEMP) warhead, being detonated far above the Earth’s surface.

For a minute there, I thought somebody forgot to pay the internet bill.

You can read Google’s official statement here.