F5 Distributed Cloud WAF is a SaaS-delivered web application firewall that provides security controls for applications across public clouds, on-premises data centers, and edge locations. The service operates as an intermediate proxy to inspect application requests and responses. The product combines signature-based detection with behavior-based protection mechanisms. The signature engine captures Common Vulnerabilities and Exposures (CVEs) and known vulnerabilities identified by F5 Labs, including Layer 7 DDoS, threat campaigns, bots, and automated threats. The behavioral engine monitors and scores client interactions based on WAF rules triggered, forbidden access attempts, login failures, and error rates to identify threats. The service includes automatic attack signature tuning to reduce false positives. It provides protection against OWASP Top 10 vulnerabilities and implements micro-segmentation through a service policy engine that utilizes IP reputation, allow/deny lists, TLS fingerprints, and ASN-based filtering. Deployment options include F5's global points of presence (PoPs), customer-managed infrastructure in public clouds (AWS, Azure, GCP), or on-premises environments. The platform supports applications running on VMs, containers, bare metal, and serverless architectures. Management is available through a web UI or APIs for automation. The service provides centralized observability through multi-application dashboards with visibility into security events, WAF signature hits, DoS events, and application performance metrics. Service levels include self-managed or fully managed options with 24x7 support from F5's Security Operations Center.