Turn on, DDoS Gone

Fastly DDoS Protection

Keep any application and API available and performant with our adaptive solution built to automatically (and accurately) mitigate DDoS at any scale.

Hero Illustration ddos
Benefits

Adaptive mitigation for every attack

DDoS is dynamic; static rules are not. Fastly DDoS Protection builds tailored rules to adaptively mitigate attacks without impacting legitimate traffic.
  • Enhance resiliency

    Ensure performance and availability of your apps and APIs so your organization can maintain revenue generation and limit outage-related brand reputation impacts.

  • Zero Attack Fees

    We align our pricing to the value you get, billing based on legitimate traffic that your business wants, never for the attack spikes we mitigate that you don’t.

  • Reduce Cloud Spend

    Stop attacks from hitting your origin and inflating operational costs while creating reduced, more consistent cloud spend overall.

Features

Every app and API needs DDoS protection

From startups launching their first mobile app to the world’s largest e-commerce sites, every application and API on the internet is susceptible to DDoS attacks slowing their service, inflating cloud expenses, or, worse, taking them offline. With Fastly DDoS Protection, anyone can flip a switch and gain immediate protection.

  • Scalable network

    Building on our powerful, global network offering 497+ Tbps as of September 30, 2025, we automatically absorb massive network layer attacks while dropping any irrelevant non-HTTP/HTTPS traffic. With the power of Fastly’s platform, we dynamically and proactively process, analyze, diagnose, and respond to DDoS attacks of all sizes so your team can uphold scalability, stability, and reliability – all with one click of a button.

  • Automatic mitigation

    Enable Fastly DDoS Protection with the flip of a switch to automatically block application DDoS attacks – from everyday nuisances through never-before-seen traffic spikes – to ensure they don’t disrupt your business. When unexpected volumetric traffic events arise, Fastly’s proprietary Adaptive Threat Engine validates their legitimacy and if malicious, begins scanning a comprehensive list of characteristics to isolate and mitigate the attacks, even if they rotate IPs.

  • Versatile protection

    No matter your architecture, you can deploy Fastly’s DDoS Protection to gain speedy, scalable defenses without tuning, even as you ship changes on-demand. It mitigates application DDoS attacks before they turn into incidents, without forcing engineering teams to become security experts or purchase confusing bundles. Start with dynamic, proactive protection at the click of a button, then integrate with the rest of our edge cloud platform when you’re ready.

Additional Features

Powerful protection anyone can use

With the flip of a switch, platform engineers, security teams, or anyone else can enable Fastly DDoS protection and gain performant DDoS mitigation for your apps and APIs .
  • Dynamic detection

    Surface attacks no matter your company size. Fastly DDoS Protection watches your traffic and its attributes continuously to dynamically detect anomalous deviations for companies of any size.

  • Adaptive identification

    Uncover even the most complex DDoS attacks. Fastly DDoS Protection’s Adaptive Threat Engine accurately identifies anomalous attack traffic characteristics to stop sophisticated DDoS attacks.

  • Near real-time mitigation

    Limit impact on your end users. Fastly DDoS Protection blocks attacks in seconds and is capable of mitigating multiple synchronized attacks at once 
without any tuning.

  • Massive capacity

    Gain the power required to mitigate massive application attacks targeting network layers. Fastly DDoS Protection easily absorbs the internet’s largest attacks with 497+ Tbps as of September 30, 2025.

  • Decipher DDoS

    Verify efficacy in seconds. Fastly DDoS Protection offers visibility into every rule custom-crafted to fight your attacks so you can rest easy knowing protection isn't coming at the cost of legitimate users.

  • Smart billing

    Make your operational spending more consistent, automatically. Fastly DDoS Protection is only billed on legitimate traffic and limits volumetric attacks from incurring delivery and egress fees.

Explore

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Frequently Asked Questions

How does Fastly’s architecture ensure resilient DDoS protection at scale?

Fastly utilizes a massive global network to absorb volumetric attacks at the edge, well before they reach your origin. Unlike legacy appliance-based solutions, our DDoS protection is integrated directly into our edge cloud platform. This allows us to inspect traffic and enforce security policies across our entire network simultaneously, ensuring that even the largest application and network-layer attacks are mitigated without compromising performance or introducing latency.

Does Fastly rely on static rules for DDoS mitigation?

No, Fastly leverages our Adaptive Threat Engine to automate DDoS mitigation. This system continuously analyzes traffic patterns to distinguish between flash crowds (legitimate traffic spikes) and malicious botnets. It dynamically creates and updates signatures in near real-time, allowing your engineering teams to block complex, rotating attacks without manual tuning or intervention.

How quickly can Fastly prevent DDoS attacks once they are detected?

Fastly is designed for near-instantaneous response. Because our detection and mitigation logic sits at the network edge, not in a centralized scrubbing center, we can detect anomalies and apply mitigation logic in seconds. This architecture allows you to prevent DDoS attacks from impacting your availability, blocking malicious traffic immediately upon detection to maintain uptime for your apps and APIs.

Will enabling DDoS protection impact legitimate user traffic or API performance?

Our solution is architected to be false-positive resistant and latency-neutral. By processing security logic at the edge alongside delivery logic, we avoid latency common in legacy scrubbing centers. We protect from DDoS attempts by filtering malicious requests while accelerating legitimate user traffic, ensuring your application remains performant even while under active attack.

How does Fastly protect from DDoS-related cost spikes?

Fastly offers a "Zero Attack Fees" billing model. We believe you shouldn't be penalized for being a target. Our customers are billed based on legitimate traffic usage, not the massive spikes in bandwidth caused by volumetric attacks. This ensures that when we protect from DDoS incidents, your cloud spend remains predictable and consistent, preventing the financial damage often associated with unmitigated attacks.

Can I integrate Fastly DDoS protection with my existing infrastructure?

Yes. Fastly is platform-agnostic and designed for versatility. Whether you are running on-premise, in the cloud, or in a hybrid environment, you can deploy our DDoS protection with a simple DNS change or by integrating our edge cloud platform. It requires no hardware installation and provides immediate "flip-of-a-switch" defense for engineers and CTOs looking to secure their infrastructure rapidly.

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