On October 20, 2025, AWS suffered a major outage in its most critical region (N. Virginia), causing global service disruptions for nearly 24 hours and impacting 140+ services.
- No cyberattack involved.
- The root cause was a DNS resolution failure in DynamoDB, triggering cascading issues across EC2, Lambda, S3, Load Balancers, IAM, CloudWatch, and more.
Well-known platforms like Snapchat, Fortnite, Roblox, Coinbase, and Prime Video were also affected.
- The takeaway still matters today:
Multi-AZ is not enough when everything depends on a single region or provider.
- At RELIANOID, we focus on true resilience through:
Global Server Load Balancing (GSLB)
Multi-cloud & multi-region architectures
Intelligent DNS-based failover
Because even the biggest clouds fail.
Being prepared makes the difference.
#CloudComputing #HighAvailability #GSLB #MultiCloud #DNS #Resilience #AWSOutage #RELIANOID
https://www.relianoid.com/blog/aws-outage-analysis-lessons-in-cloud-resilience-and-the-role-of-gslb/
