Question

A gaming company runs a real-time multiplayer backend on Amazon ECS tasks behind a load balancer. The game servers require exposure of a single static IP address per Availability Zone for players to whitelist in corporate firewalls, must handle millions of concurrent TCP connections with ultra-low latency, and the backend application needs to see each player's original client IP for anti-cheat logging. Which load balancing solution meets all of these requirements?

Accepted Answer

Use a Network Load Balancer, which provides a static IP per Availability Zone and preserves the client source IP address for TCP traffic.

Answer

Use an Application Load Balancer and read the client IP from the X-Forwarded-For header inserted into each request.

Answer

Use a Gateway Load Balancer to forward TCP traffic to the ECS tasks while assigning Elastic IP addresses.

Answer

Use an Application Load Balancer with a dedicated Elastic IP attached to each Availability Zone subnet.