2021 Gartner Peer Insights “Voice of the Customer”: Web Application Firewalls

Fastly (Signal Sciences) named a Customers' Choice for Three Consecutive Years

Our customers have spoken: Fastly (Signal Sciences) is one of the highest rated Web Application Firewalls (WAF) vendor. We were named a 2021 Gartner Peer Insights Customers’ Choice for WAF based on end-user testimonials with an overall rating of 4.9-out-of-5 stars (as of 31 January 2021 and based on 66 reviews).

Over 60 enterprise IT professionals rated our web application and API protection solution for its ability to:

  • Block attacks with virtually zero false positives
  • Integrate with a diverse array of DevOps and security platforms
  • Provide visibility within a unified management console
  • Run in full blocking mode, like 90% of all customers

With one of the highest overall rating, our platform is the strategic choice for users of WAF solutions. This report compares our WAF against all vendors on the market, with a point-by-point comparison of key features.

"Incredibly fast to implement, incredibly powerful to use. Unlike traditional WAFs, Signal Sciences has very little overhead in terms of time or effort - and returns an exponential impact for securing our organization."

Senior Manager, Application Experience in the manufacturing industry

"Top notch WAF for cloud deployments."

- Engineering Manager in the retail industry

"A rarity among WAFs - works as represented with minimal system and management overhead. The product has performed extremely well. We have not noticed any negative impact on system performance, and we have not yet encountered a single false-positive!"

- Sr. Principal Analyst in the services industry


See how all WAF vendors compare based on customer experiences:


Read an assessment of the WAF market based on customer reviews—download the Gartner Peer Insights “Voice of the Customer” 2021 report:

Gartner Peer Insights ‘Voice of the Customer’: Web Application Firewalls, Peer Contributors, 25 March, 2021

Gartner Peer Insights Customers’ Choice constitute the subjective opinions of individual end-user reviews, ratings, and data applied against a documented methodology; they neither represent the views of, nor constitute an endorsement by, Gartner or its affiliates.

This graphic was published by Gartner, Inc. as part of a larger research document and should be evaluated in the context of the entire document.

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