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F5 Rules for AWS WAF vs The Fastly Next-Gen WAF (powered by Signal Sciences) comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

F5 Rules for AWS WAF
Ranking in Web Application Firewall (WAF)
13th
Average Rating
8.4
Reviews Sentiment
7.8
Number of Reviews
10
Ranking in other categories
Business Rules Management (3rd)
The Fastly Next-Gen WAF (po...
Ranking in Web Application Firewall (WAF)
34th
Average Rating
7.6
Reviews Sentiment
4.8
Number of Reviews
4
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Web Application Firewall (WAF) category, the mindshare of F5 Rules for AWS WAF is 0.4%, up from 0.0% compared to the previous year. The mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) is 1.2%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
F5 Rules for AWS WAF0.4%
The Fastly Next-Gen WAF (powered by Signal Sciences)1.2%
Other98.4%
Web Application Firewall (WAF)
 

Featured Reviews

Vibin Thomas - PeerSpot reviewer
Technical Team Lead - Content Security at Valuepoint Systems
Advanced protection has reduced web attacks and improves application performance and operations
One area where F5 Rules for AWS WAF can be improved is in simplifying the tuning process. While F5 Rules for AWS WAF is powerful, fine-tuning it to match specific application behavior can sometimes be complex and time-consuming, especially for teams without deep WAF expertise. Another improvement could be enhanced visibility and reporting. Although AWS WAF provides logs, having more intuitive and built-in dashboards or clearer categorization of rule triggers would make it easier to quickly identify and analyze attack patterns. Additionally, expanding the capabilities around bot management and behavior analysis would be beneficial compared to some dedicated bot management solutions. More advanced detection techniques could further strengthen the protection against sophisticated automated traffic. Finally, providing more predefined templates or best practice recommendations for different application types would help speed up the deployment and reduce the initial configuration effort.
reviewer2161107 - PeerSpot reviewer
Staff Engineer at a retailer with 1,001-5,000 employees
Room for improvement with user interface while competitive pricing impresses
It is managed through Infrastructure as Code, so all configurations can be managed in the code itself, which is beneficial. Because it uses rules, it is easy to set up, and we have many different sites where the configurations are straightforward. Though the UI is not very interactive, which is a downside, we can manage many things. The UI is not very intuitive and could be better. However, we manage all the configurations through code, which is easy to maintain. It has extensive anomaly detection capabilities, so the traffic is classified into several categories where thresholds can be defined and customized based on false positives and false negatives. This is advantageous because you do not need to tweak it very often. Once you set it up, an audit once a quarter would suffice. 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.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"F5 Rules for AWS WAF's OWASP protection and bot protection have reduced attacks on my applications by 72 to 90%."
"After implementing F5 Rules for AWS WAF, we observed a reduction of approximately 60 to 70% in web application security incidents reaching our application team, particularly blocking common threats like bot traffic and SQL injections without impacting our downstream systems."
"F5 Rules for AWS WAF is a strong, enterprise-focused solution for organizations that need robust web application security, centralized policy management, and better visibility into application layer threats within AWS environments."
"In the past few years, we have zero security incidents, indicating a return on investment."
"F5 Rules for AWS WAF has positively impacted us by improving our web application security without adding too much operational overhead."
"F5 Rules for AWS WAF should be highly recommended for AI applications, as security is a major concern, and using F5 helps prevent security issues and stabilizes organizations and applications."
"Overall, the combination of reduced manual effort, improved security posture, and better application performance has delivered a strong return on investment."
"I advise anyone looking for a great tool to secure their public-facing applications to start using F5 Rules for AWS WAF."
"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"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."
"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."
"The product's most valuable feature is its ability to set up the rules easily."
 

Cons

"From an improvement standpoint, one area where F5 Rules for AWS WAF could improve is in simplifying policy management and making advanced configurations more intuitive, especially for teams that are newer to enterprise WAF technologies."
"I think F5 Rules for AWS WAF could be improved mainly around visibility, specifically having more actionable recommendations for false positives."
"There are potential false positives in F5 Rules for AWS WAF that sometimes require tuning."
"The additional costs for F5 Rules for AWS WAF are quite high, as F5 managed rules require a separate subscription on top of the standard AWS WAF charges; it would be great if it would be pre-integrated."
"An area for improvement I see is that while everything is in good shape, I demand continuous improvisation of these rule sets."
"It's too early to talk about a return on investment with F5 Rules for AWS WAF."
"F5 Rules for AWS WAF can be improved by simplifying the tuning process to reduce false positives and providing more built-in dashboards for better visibility and further customization."
"F5 Rules for AWS WAF could be improved with deeper integration with Infrastructure as Code tools like Terraform for simplification, as well as more AI-driven recommendations for rules tuning to reduce false positives and better dashboards for visibility at the CXO level."
"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."
"Fastly don't support caching for China users. That's the only feature lacking compared to Akamai."
"Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic."
"The UI is not very intuitive and could be better."
 

Pricing and Cost Advice

Information not available
"Signal Sciences is pretty cheap compared to other solutions."
"The pricing is 50% less than Akamai."
"The product has an affordable cost."
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Top Industries

By visitors reading reviews
Construction Company
30%
Comms Service Provider
18%
Outsourcing Company
6%
Computer Software Company
6%
Manufacturing Company
9%
Comms Service Provider
9%
Retailer
8%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise1
Large Enterprise7
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for F5 Rules for AWS WAF?
My experience with the pricing, setup cost, and licensing for F5 Rules for AWS WAF was good with purchasing and the setup cost.
What needs improvement with F5 Rules for AWS WAF?
The additional costs for F5 Rules for AWS WAF are quite high, as F5 managed rules require a separate subscription on top of the standard AWS WAF charges; it would be great if it would be pre-integr...
What is your primary use case for F5 Rules for AWS WAF?
F5 Rules for AWS WAF manages the security rule set by applying the rules and setting the block directly in AWS WAF to provide advanced protection against web application attacks, bots, threats, and...
What is your experience regarding pricing and costs for Signal Sciences?
The pricing is very competitive compared to other providers. The pricing is definitely a factor in our decision-making process.
What needs improvement with Signal Sciences?
We do use it, but the UI can be improved as we mostly work through the CI/CD. It provides support, but sometimes it is hard to navigate unless you are very familiar with it.
What is your primary use case for Signal Sciences?
The CDN is for caching and The Fastly Next-Gen WAF (powered by Signal Sciences) is for protecting the servers from malicious traffic. They both perform different jobs and serve different purposes, ...
 

Also Known As

No data available
Signal Sciences Next-Gen WAF, Signal Sciences RASP
 

Overview

 

Sample Customers

Information Not Available
Chef, Adobe, Datadog, Etsy, GrubHub, Vimeo, SendGrid, Under Armour, Duo, AppNexus
Find out what your peers are saying about F5 Rules for AWS WAF vs. The Fastly Next-Gen WAF (powered by Signal Sciences) and other solutions. Updated: September 2026.
913,654 professionals have used our research since 2012.