Which combination of actions should a solutions architect take to improve availability and performance?

Explanations:

AWS Global Accelerator improves the availability and performance of TCP-based workloads by routing traffic to the optimal endpoint based on health, geography, and routing policies. Adding load balancers as endpoints allows for efficient management of incoming traffic across multiple AWS Regions.

While Amazon CloudFront can improve performance by caching content, it is not ideal for stateful TCP-based workloads. The use of Route 53 for latency-based routing can enhance performance but does not address the stateful nature of the application effectively.

Configuring two Application Load Balancers (ALBs) in each region is not optimal for a stateful TCP-based workload, as ALBs are better suited for HTTP/S traffic. This setup may not handle TCP connections efficiently, especially with a stateful workload.

Network Load Balancers (NLBs) are suitable for TCP-based workloads due to their ability to handle millions of requests per second while maintaining ultra-low latencies. Configuring NLBs for both EC2 and on-premises endpoints ensures efficient routing for stateful traffic.

While NLBs are appropriate for the EC2 endpoints, using an Application Load Balancer for on-premises endpoints is not ideal for a stateful TCP-based workload. ALBs are designed for HTTP/S and do not manage TCP connections efficiently.