LONDON – A major disruption affected internet users globally on Monday morning due to an issue with Amazon’s cloud computing service. This glitch impacted numerous prominent online platforms, including Snapchat, the popular gaming titles Roblox and Fortnite, as well as the messaging app Signal.

About three hours into the incident, Amazon Web Services announced they were beginning to resolve the technical difficulties.

Amazon Web Services serves as the backbone for cloud computing for a wide array of organizations, ranging from governmental bodies and educational institutions to businesses like The Associated Press, enabling them to offer online services efficiently.

Reports on DownDetector, a platform for monitoring online outages, indicated disruptions with services such as Snapchat, Roblox, Fortnite, Robinhood, and the McDonald’s app among others. The site suggested that these problems were likely linked to Amazon Web Services’ issues.

Both Coinbase and Signal acknowledged on X that they were facing challenges connected to the AWS disruption.

Even Amazon’s own services weren’t immune. Users of the company’s Ring doorbell cameras and Alexa-powered smart speakers posted on DownDetector that they weren’t working, while others said they were unable to access the Amazon website or download books to their Kindle.

Amazon pinned the outage on issues related to their domain name system, an apparatus that converts web addresses into IP addresses so websites and apps can load on internet-connected devices.

The first signs of trouble emerged at around 3:11 a.m. Eastern Time, when Amazon Web Services reported on its Health Dashboard that it was “investigating increased error rates and latencies for multiple AWS services in the US-EAST-1 Region.”

Later, the company reported that there were “significant error rates” and that engineers were “actively working” on the problem.

Around 6 a.m. Eastern Time, the company said that it was seeing recovery across most of the affected services. “We can confirm global services and features that rely on US-EAST-1 have also recovered,” it said, adding that it is working on a “full resolution.”

This is not the first time issues with Amazon’s key services have caused widespread disruptions. Many popular internet services were down after a brief outage in 2023. AWS’s longest outage in recent history occurred in late 2021, when companies — everything from airline reservations and auto dealerships to payment apps and video streaming services — were affected for more than five hours. Outages also happened in 2020 and 2017.

The company reported that 64 internal AWS services were affected by the issue.

AWS customers include some of the world’s biggest businesses and organizations.

“So much of the world now relies on these three or four big (cloud) compute companies who provide the underlying infrastructure that when there’s an issue like this, it can be really impactful across a broad range, a broad spectrum” of online services, said Patrick Burgess, a cybersecurity expert at U.K.-based BCS, The Chartered Institute for IT.

“The world now runs on the cloud,” and the internet is seen as a utility like water or electricity, as we spend so much of our lives on our smartphones, Burgess said.

And because so much of the online world’s plumbing is underpinned by a handful of companies, when something goes wrong, “it’s very difficult for users to pinpoint what is happening because we don’t see Amazon, we just see Snapchat or Roblox,” Burgess said.

“The good news is that this kind of issue is usually relatively fast (to resolve)” and there’s no indication that it was caused by a cyber incident like a cyberattack, Burgess said.

“This looks like a good old-fashioned technology issue, something’s gone wrong and it will be fixed by Amazon,” he said.

There are “well-established processes” to deal with outages at Amazon Web Services, as well as rivals Google and Microsoft, which together provide most of the world’s cloud computing infrastructure, Burgess said, adding that such outages are usually fixed in “hours rather than days.”

Amazon Web Services said at about 6:30 a.m. Eastern time that “most AWS Service operations are succeeding normally now.”