The AWS global infrastructure is built around AWS Regions and Availability Zones. AWS 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.
For more information about AWS Regions and Availability Zones, see AWS Global
Infrastructure
In addition to the AWS global infrastructure, AWS End User Messaging SMS offers several features to help support your data resiliency and backup needs.
Resilience in SMS Routing
AWS is committed to improving the resilience and deliverability of SMS messages for our customers. We maintain multiple routes and adjust SMS routing based on route trustworthiness, message deliverability, and message cost.