In our 33-criteria evaluation of web application firewall (WAF) vendors, we identified the 10 most significant ones — Akamai Technologies, Amazon Web Services, Barracuda Networks, Cloudflare, F5 Networks, Fortinet, Imperva, Positive Technologies, Radware, and Rohde & Schwarz Cybersecurity — and researched, analyzed, and scored them. This report shows how each measures up and helps security professionals make the right choice.