Early Monday morning, millions of users woke up to find much of the internet down. Amazon Web Services (AWS), the world’s largest cloud infrastructure provider, experienced a major outage that rippled across industries, from fintech to airlines to fast food apps. The disruption, which began around 3 a.m. Eastern, affected major platforms including Facebook, Robinhood, Venmo, Reddit, Lyft, United Airlines, The New York Times, and even McDonald’s mobile app.