F5 BIG-IP DNS vs Fastly DDoS Protection: Side-by-Side Comparison (2026)

F5 BIG-IP DNS: DNS and Global Server Load Balancing solution with DDoS protection. built by F5. Core capabilities include Authoritative DNS with up to 100 million RPS capacity, Global Server Load Balancing (GSLB), DDoS protection against volumetric attacks..

Fastly DDoS Protection: Cloud-based DDoS protection for apps and APIs with automatic mitigation. built by Fastly. Core capabilities include Adaptive Threat Engine for automatic attack detection and mitigation, 497+ Tbps network capacity for absorbing large-scale attacks, Network layer attack absorption with non-HTTP/HTTPS traffic filtering..

Both serve the DDoS Mitigation market but differ in approach, feature depth, and target audience.

F5 BIG-IP DNS differentiates with Authoritative DNS with up to 100 million RPS capacity, Global Server Load Balancing (GSLB), DDoS protection against volumetric attacks. Fastly DDoS Protection differentiates with Adaptive Threat Engine for automatic attack detection and mitigation, 497+ Tbps network capacity for absorbing large-scale attacks, Network layer attack absorption with non-HTTP/HTTPS traffic filtering.

F5 BIG-IP DNS is developed by F5. Fastly DDoS Protection is developed by Fastly. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

F5 BIG-IP DNS and Fastly DDoS Protection serve similar DDoS Mitigation use cases: both are DDoS Mitigation tools, both cover DDOS. Review the feature comparison above to determine which fits your requirements.