AWS Outage October 20, 2025: What Happened
15-Hour Service Disruption
On October 20, 2025, Amazon Web Services experienced a major outage lasting 15 hours, affecting millions of users globally.
- Duration: 3:11 AM - 6:53 PM ET (15 hours)
- Root Cause: DynamoDB DNS resolution error
- Impact: 11+ million error reports
- Region: US-EAST-1 (Northern Virginia)
Affected Services
Social & Gaming
- • Snapchat
- • Reddit
- • Roblox
- • Fortnite
Finance
- • Venmo
- • Robinhood
- • Coinbase
- • Major banks
For full timeline and analysis, see our Tech Week #62 newsletter.