In terms of F5 Advanced WAF's most valuable features, I would definitely say its stability. F5 is one the most stable products. Either as the load balancer or the web application firewall, it is very stable.
F5 Advanced WAF offers features like DDoS prevention, anti-bot protection, AI-driven threat management, and customizable security policies. It provides load-balancing and security functionalities, with a flexible licensing model. Note that certain features require additional licenses, integration can be complex, and automatic event log deletion can challenge long-term reporting. Despite not being a Gartner Quadrant leader and excluding certain threat features in the standard license, it is praised for technical support.