A logistics company is designing a High Availability and Disaster Recovery (HA/DR) architecture for its new central supply chain inventory auditing platform. The system processes inventory updates from international warehouses and has a strict Recovery Time Objective (RTO) of 30 minutes and a Recovery Point Objective (RPO) of 5 minutes. The application runs on Amazon ECS Fargate tasks behind an Application Load Balancer (ALB) and relies on Amazon Aurora PostgreSQL for data storage. Outbound inventory sync calls must be routed securely to third-party vendors. The architect chooses us-east-1 as the primary region and us-west-2 as the disaster recovery region. Which two configurations should the solutions architect implement to achieve these HA/DR objectives? (Select TWO.)
- Create an Amazon Aurora Global Database with the primary database cluster in us-east-1 and a secondary database cluster in us-west-2 to support sub-second physical replication and satisfy the Recovery Point Objective (RPO) requirement.Answer
- Configure Amazon Route 53 active-passive failover routing by creating a primary record pointing to the Application Load Balancer in us-east-1 associated with an active health check, and a secondary record pointing to the Application Load Balancer in us-west-2.Answer
- CEnable Amazon Aurora Auto Scaling on the reader instances in us-west-2 to automatically promote a reader instance to primary based on write connection load, and configure Route 53 multi-value routing to distribute write traffic across both regions.
- DConfigure Amazon Route 53 latency-based routing to direct write requests to the lowest latency region, relying on application-level retries and default Aurora asynchronous cross-region replication to resolve write conflicts across both regions.
- EDeploy a single NAT Gateway in us-east-1 to route outbound traffic for both regions to third-party vendors, and configure a Route 53 Private Hosted Zone (PHZ) in the primary VPC without associating it with the secondary VPC.