If you were experiencing issues with Zoom calls today, you were not alone.

But if you take a close look at today’s outage, it is clear that it was correlated with an AWS outage today.

In fact, most of Zoom runs on AWS, according to AWS. This is despite Oracle’s claim that millions of users run Zoom on Oracle Cloud. Zoom didn’t state the cause of the outage, but it is quite possible from these two charts that a well-architected transit network, such as the Aviatrix Multi-Cloud Network Architecture, could have prevented this outage.