Resilience in Amazon Health
The Amazon global infrastructure is built around Amazon Regions and Availability Zones. Amazon Regions provide multiple physically separated and isolated Availability Zones, which are connected with low-latency, high-throughput, and highly redundant networking. With Availability Zones, you can design and operate applications and databases that automatically fail over between zones without interruption. Availability Zones are more highly available, fault tolerant, and scalable than traditional single or multiple data center infrastructures.
Amazon Health events are stored and replicated across multiple Availability Zones. This approach ensures that you can access them from the Amazon Health Dashboard or the Amazon Health API operations. You can view Amazon Health events up to 90 days from when they occur.
For more information about Amazon Regions and Availability Zones, see Amazon Global
Infrastructure