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The Fastly Next-Gen WAF (powered by Signal Sciences) Logo

The Fastly Next-Gen WAF (powered by Signal Sciences) Reviews

Vendor: Fastly
3.8 out of 5
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What is The Fastly Next-Gen WAF (powered by Signal Sciences)?

The Fastly Next-Gen WAF (powered by Signal Sciences) provides web application and API protection, RASP, rate limiting, bot protection and DDoS purpose built to eliminate the challenges of legacy WAF.

Get the The Fastly Next-Gen WAF (powered by Signal Sciences) Buyer's Guide and find out what your peers are saying about The Fastly Next-Gen WAF (powered by Signal Sciences), Prisma Cloud by Palo Alto Networks, Imperva Application Security Platform and more!
The Fastly Next-Gen WAF (powered by Signal Sciences) is the #28 ranked solution in top Web Application Firewalls. PeerSpot users give The Fastly Next-Gen WAF (powered by Signal Sciences) an average rating of 7.6 out of 10. The Fastly Next-Gen WAF (powered by Signal Sciences) is most commonly compared to Prisma Cloud by Palo Alto Networks: The Fastly Next-Gen WAF (powered by Signal Sciences) vs Prisma Cloud by Palo Alto Networks. The Fastly Next-Gen WAF (powered by Signal Sciences) is popular among the large enterprise segment, accounting for 56% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a computer software company, accounting for 12% of all views.
Buyer's Guide
The Fastly Next-Gen WAF (powered by Signal Sciences)
August 2025
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The Fastly Next-Gen WAF (powered by Signal Sciences) mindshare

As of September 2025, the mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) in the Web Application Firewall (WAF) category stands at 1.1%, up from 0.7% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Web Application Firewall (WAF) Market Share Distribution
ProductMarket Share (%)
The Fastly Next-Gen WAF (powered by Signal Sciences)1.1%
F5 Advanced WAF9.2%
Microsoft Azure Application Gateway7.8%
Other81.9%
Web Application Firewall (WAF)

PeerResearch reports based on The Fastly Next-Gen WAF (powered by Signal Sciences) reviews

TypeTitleDate
CategoryWeb Application Firewall (WAF)Sep 18, 2025Download
ProductReviews, tips, and advice from real usersSep 18, 2025Download
ComparisonThe Fastly Next-Gen WAF (powered by Signal Sciences) vs F5 Advanced WAFSep 18, 2025Download
ComparisonThe Fastly Next-Gen WAF (powered by Signal Sciences) vs AWS WAFSep 18, 2025Download
ComparisonThe Fastly Next-Gen WAF (powered by Signal Sciences) vs Microsoft Azure Application GatewaySep 18, 2025Download
Suggested products
TitleRatingMindshareRecommending
Prisma Cloud by Palo Alto Networks4.21.7%98%111 interviewsAdd to research
Imperva Application Security Platform4.37.4%95%133 interviewsAdd to research
 
 
Key learnings from peers

Valuable Features

Fastly Next-Gen WAF (powered by Signal Sciences) offers rule-based configuration, simplifying policy control across applications. Easy setup and manageability through agent-based and code-managed configurations appeal to users. Integration with CI/CD pipelines via GitHub Actions enhances compatibility. It features Varnish Configuration Language for rule creation, extensive anomaly detection to classify traffic, and is more maintainable than similar options. Though the UI lacks intuitiveness, its overall functionality and coding customization are praised.
  • "Because The Fastly Next-Gen WAF (powered by Signal Sciences) is API-driven, we have integrations with the CI/CD pipeline through GitHub Actions, making it easy to integrate."
  • "Fastly (Signal Sciences) integrates and tags the intermittent traffic based on patterns. It generates signals and provides them in a dashboard where we can view them and decide whether to allow or deny traffic. It's a more advanced and easy-to-navigate dashboard."
  • "The product's most valuable feature is its ability to set up the rules easily."

Room for Improvement

The Fastly Next-Gen WAF (powered by Signal Sciences) requires improvements in handling lags and complexity in creating custom rules. Its rule effectiveness isn't optimal, causing reliance on creating custom solutions to bypass WAF. Managing agents presents challenges due to dependencies on platforms like Apache or NGINX. There's a lack of caching support for users in China. Additionally, improvements are needed in the UI for better navigation, especially for those working through CI/CD.
  • "The UI is not very intuitive and could be better."
  • "Fastly don't support caching for China users. That's the only feature lacking compared to Akamai."
  • "The areas that could be improved in Signal Sciences include the effectiveness of rules, as many didn't function optimally and required custom rule-writing to address bypasses for WAF."

Pricing

Fastly Next-Gen WAF, powered by Signal Sciences, is considered affordable by users, with costs notably lower than many competitors. It is particularly cost-effective, being 50% less expensive than Akamai. Many find its competitive pricing a significant factor in decision-making, especially with the ability to manage it on-premises, which aids in handling setup costs efficiently.
  • "The pricing is 50% less than Akamai."
  • "The product has an affordable cost."
  • "Signal Sciences is pretty cheap compared to other solutions."

Service and Support

Fastly's customer support, managing Signal Sciences, is generally good but can lack issue comprehension, leading to website downtime. During migrations, teams needed multiple interactions for assistance but found some executives knowledgeable. Support response is typically quick within a day or two, unless incidents occur. Users report no significant service interruptions recently. However, navigation remains challenging unless users are familiar.

Deployment

Initial setup of The Fastly Next-Gen WAF (powered by Signal Sciences) can be straightforward for those acquainted with the UI, though challenging for novices. Technical expertise is needed; factors like the operating system and web server require attention, leading to potential errors. In-cloud deployment simplifies the process, while a migration involves more time. Integration with tools like Datadog and Slack is easy, enhancing the ongoing management and anomaly detection efforts.
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our The Fastly Next-Gen WAF (powered by Signal Sciences) Buyer's Guide for additional reliable information.

Top industries

By visitors reading reviews
Computer Software Company
12%
Retailer
11%
Manufacturing Company
11%
Financial Services Firm
9%
Healthcare Company
7%
Comms Service Provider
5%
Performing Arts
4%
Media Company
4%
Construction Company
4%
Government
3%
Educational Organization
3%
Hospitality Company
3%
University
3%
Computer Retailer
3%
Insurance Company
3%
Sports Company
3%
Non Profit
2%
Real Estate/Law Firm
2%
Pharma/Biotech Company
1%
Outsourcing Company
1%
Logistics Company
1%
Legal Firm
1%
Recruiting/Hr Firm
1%
Renewables & Environment Company
1%
Photography Company
1%
Energy/Utilities Company
1%
Consumer Goods Company
1%
Transportation Company
1%
Leisure / Travel Company
1%
Recreational Facilities/Services Company
1%

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Learn more about The Fastly Next-Gen WAF (powered by Signal Sciences)

The Fastly Next-Gen WAF (powered by Signal Sciences) was previously known as Signal Sciences Next-Gen WAF, Signal Sciences RASP.

The Fastly Next-Gen WAF (powered by Signal Sciences) customers

Chef, Adobe, Datadog, Etsy, GrubHub, Vimeo, SendGrid, Under Armour, Duo, AppNexus

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Product Categories

Product Categories
Web Application Firewall (WAF)

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The Fastly Next-Gen WAF (powered by Signal Sciences) Reviews Summary
Author infoRatingReview Summary
Staff Engineer at a retailer with 1,001-5,000 employees3.5We chose Fastly Next-Gen WAF for its cloud-based ease, code-managed configuration, and strong anomaly detection, despite a non-intuitive UI and limited support. It's competitively priced, integrates well with CI/CD, and meets our security and deployment needs.
Staff Engineer at a retailer with 1,001-5,000 employees4.5We use Fastly Next-Gen WAF for protecting our public sites after migrating from Akamai for better maintainability and cost savings. It enhances page speed with its unique caching approach but lacks caching support for China users.
Security Engineer-DevSecOps at a computer software company with 51-200 employees3.0The most valuable feature of The Fastly Next-Gen WAF is its easy rule setup and policy control per agent. However, the effectiveness of rules needs improvement, and managing agents can be difficult. We chose this solution for its cost-effectiveness and Kubernetes compatibility.
Security Engineer at Amazon4.0We used Signal Sciences' web application firewall to protect our applications, appreciating its flexible rule configuration but noting issues with lag and complexity in custom rules. It lacks features like rate limiting based on cookies or IPs.