The most valuable thing for me is TCP/IP Layer 4 stuff you can do with HAProxy. You can go down to the protocol level and make decisions on something.
HAProxy is valued for effective application load balancing and TCP/IP Layer 4 capabilities, allowing protocol-level decision-making. Recognized for scalability and session control, it enhances service management with features like sticky sessions and round-robin. Organizations appreciate its stability, cost-effectiveness, and robust load balancing. However, pricing, monitoring, and reports could improve, and better documentation and combination integrations are needed, along with enhancements in dynamic configuration and logging.