The Application Load Balancer (ALB) is designed to work at the application layer (Layer 7) of the OSI model and supports content-based routing. It can terminate SSL connections, thus offloading SSL processing from the backend servers, and route traffic based on HTTP headers, which fits the specified requirements. Additionally, ALB has support for WebSocket, which is a protocol providing full-duplex communication channels over a single TCP connection. The Network Load Balancer (NLB) operates at Layer 4 and does not support SSL termination or content-based routing. While Amazon CloudFront supports SSL termination, WebSocket, and can route based on headers, it is primarily a content delivery network, not a load balancer designed to manage application traffic across server resources. Lastly, AWS Global Accelerator improves global application availability and performance but lacks the specified application layer routing capabilities.