Introducing Multi-Region Application Architecture
The Multi-Region Application Architecture solution helps demonstrate a fault-tolerant application with easy failover to a backup region. This solution leverages Amazon Simple Storage Service (Amazon S3) Cross-Region replication and Amazon DynamoDB Global Tables to asynchronously replicate application data between the primary and secondary AWS Region. A sample photo sharing web application is also deployed in each region to serve as a visual demonstration of the solution’s back-end layers and to verify that regional failover is working.
Source:: Amazon AWS