Here’s what to know about the global outage and what has been impacted: Many of the apps and websites affected by outages use AWS, an Internet-based cloud service for the tech giant Amazon. AWS first reported “increased error rates and latencies” across a number of its services in the early hours of Monday morning.

It took a day without Amazon Web Services for Americans to realize how reliant the internet is on a single company.

It was the largest internet disruption since last year’s CrowdStrike malfunction hobbled technology systems in hospitals, banks and airports, highlighting the vulnerability of the world’s interconnect...