DNS · Domain Name System
The name-resolution layer; because regional failover and traffic draining depend on it, it is a shared global dependency capable of turning one region's fault into an estate-wide outage.
Current numbers
~14.5 hr (14 h 32 min)AWS US-EAST-1 event, Oct 19–20, 2025: a DNS-automation fault in one region reached dependent services and features anchored there