Slack, Snapchat, Signal and Perplexity were some of the affected apps and websites, among a host of big names. AWS offers cloud servers that allow these services, and millions of other websites and platforms, to run. AWS is a cloud-computing platform that provides the infrastructure underpinning much of the internet.

A major AWS outage Monday morning caused problems with many of the largest sites on the internet for several hours. And it's not the first time.

Amazon Web Services, a cloud platform that supports a portion of the internet, experienced a massive outage on Monday.