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Massive AWS Outage Sparks Calls for Cloud Diversification

10/27/2025

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Story summary
  • On October 20, 2025, an Amazon Web Services outage began around 3 a.m. ET due to DNS failures, affecting millions and platforms like Duolingo, Venmo, and Canvas.
  • By 5:24 a.m. ET, Amazon reported mitigation, but residual issues persisted for Carnegie Mellon University’s TartanConnect.
  • The outage spurred discussions about cloud diversification, noting AWS, Microsoft Azure, and Google Cloud hold over 60% of the market.
  • Experts urge contingency plans to prevent disruptions.