On Azure’s status page, Microsoft’s messages have linked the outage to an “inadvertent configuration change” and DNS problem. At around 3:20PM ET, the company said it had finished deploying its “last known good” configuration and says customers should soon start seeing signs of recovery, with “full mitigation” expected in the next four hours.

Both Amazon's AWS and Microsoft's Azure have experienced disruptions this evening, appearing to impact people using several key websites and apps.