Question

A financial services company runs a stateless REST API on an Application Load Balancer backed by Auto Scaling groups in two AWS Regions (us-east-1 and eu-west-1). The API returns highly dynamic, non-cacheable responses. Global users report inconsistent latency and slow initial connections, and the company wants a static set of IP addresses that can be allow-listed by enterprise clients' firewalls, along with fast regional failover. Which solution best meets these requirements?

Accepted Answer

Use AWS Global Accelerator with endpoint groups for each Region and add both ALBs as endpoints.

Answer

Put Amazon CloudFront in front of both ALBs and use a custom origin group with origin failover.

Answer

Configure Amazon Route 53 latency-based routing with health checks pointing to each Regional ALB.

Answer

Deploy a Network Load Balancer in each Region and use Route 53 weighted routing between them.