Architecture where multiple systems run simultaneously and share the workload. Like having two engines powering one plane at the same time.
Global websites use active-active configurations across multiple regions so if one data center fails, the others handle all traffic seamlessly.
Active-active is an architecture pattern rather than a single product. Across clouds, it’s typically built with global or regional load balancing plus health checks and routing (DNS/anycast) to send traffic to multiple live deployments at the same time.