Uptime

Caused by a power failure at a third-party data center.

When global airport group daa moved to Office 365, it found its on-premises backup service was no longer enough to handle its data backup and retention needs. So it turned to the cloud.

The problem affected a broad slice of internet commerce, including Amazon, Home Depot, Airbnb, and UPS.

People posted more than 57,000 times about the issue on Twitter, with many ridiculing the bank’s technical capabilities.

The number of data center outages is growing, but IT infrastructure is expanding much faster.

There’s a lot to be learned from the incident. Here are the first questions that must be answered.

The outage, which lasted about 4 hours and halted all trading, came at a delicate time for the exchange.