A problem with Amazon's cloud computing service crashed large swaths of the internet Monday, including government sites, social media, gaming, streaming, universities, financial platforms and more.

An unprecedented Amazon Web Services outage that caused nearly 150 major sites and apps – including Snapchat, Venmo and Roblox – to go dark was apparently caused by a common tech glitch. The 15-hour outage appeared to be caused by an “underlying DNS issue,” Amazon Web Services said in a status tracker on its website.

Amazon Web Servies is experiencing global outage issues, according to DownDetector. What's impacted? Are websites down? What we know.

Social media apps including Snapchat, Facebook, and Reddit saw a sharp rise in reports of connectivity issues. At its peak, the Snapchat-related reports reached over 7,000 globally. Delta Air Lines and United Airlines experienced disruptions, per DownDetector, along with telecommunications provider AT&T.

On Monday afternoon, Amazon confirmed that an outage affecting Amazon Web Services’ cloud hosting had been resolved, impacting millions across the Internet.

Amazon Web Services is experiencing an outage early Monday morning, causing other apps that use the platform to not load for users, according to Downdetector. These are the apps that aren’t available,