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Fortinet FortiWeb Cloud WAF-as-a-Service 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

Cloudflare Web Application ...
Sponsored
Ranking in Web Application Firewall (WAF)
7th
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
26
Ranking in other categories
No ranking in other categories
Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
18th
Average Rating
8.8
Reviews Sentiment
6.4
Number of Reviews
10
Ranking in other categories
No ranking in other categories
The Fastly Next-Gen WAF (po...
Ranking in Web Application Firewall (WAF)
25th
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 March 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 5.4%, down from 6.9% compared to the previous year. The mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.9%, up from 0.4% compared to the previous year. The mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) is 1.3%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Cloudflare Web Application Firewall5.4%
Fortinet FortiWeb Cloud WAF-as-a-Service0.9%
The Fastly Next-Gen WAF (powered by Signal Sciences)1.3%
Other92.4%
Web Application Firewall (WAF)
 

Featured Reviews

DB
CTO at PlayNirvana
Advanced security reporting has protected high-traffic betting platforms from constant attacks
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we have a dedicated IT team for that, and I'm not involved with Cloudflare much anymore. But if I were to compare them to F5, I would like to see more features that F5 offers. F5 has an option to bring the whole infrastructure, the whole WAF and all their packages, Bot Management, and everything else on your infrastructure. You need to install certain services from their side, and then you can choose if you would like requests to hit your servers immediately or if requests need to be proxied through F5 backbone. That would be a nice addition because we have 90% of the traffic as legit traffic coming from whitelisted servers. If it comes from whitelisted servers, I don't need to go every request through the backbone; I could easily just IP whitelist everything. Then I could maybe have Bot Management on my infrastructure that drastically reduces the price of Cloudflare. I would like to see Push CDN more improved in the next release of Cloudflare Web Application Firewall. And maybe something similar to Pushpin that Fastly has, which is an option where you can push messages that then can be scaled globally over the network. From our perspective, if we have a listener that listens for stock updates, I would just need to have one processor that pushes those updates to the Cloudflare API, and then Cloudflare would broadcast that message to all listeners. Cloudflare will check the order of the message, and if you, as a customer, are not connected or have some kind of network issue, when you reconnect, you will receive the latest state and missing updates.
NiteshSharma - PeerSpot reviewer
Pre Sales Architect at network techlab
Comprehensive web protection has secured public apps and supports advanced audit requirements
Fortinet FortiWeb Cloud WAF-as-a-Service has multiple valuable aspects. The WAF solution secures whatever public domains have been published by the public platform or internal servers exposed to public users. Firewalls have limitations, which is why I suggest using a WAF solution. The firewall provides the same features but in a limited edition. When discussing the SaaS platform or Layer 7 layer of security, you will receive multiple benefits. Firewalls have limitations with signatures, bot protection, and DOS protection. Fortinet FortiWeb Cloud WAF-as-a-Service is a dedicated WAF product that handles all DOS protection, bot protection, API security, endpoint connectivity, signature-based support, and top 10 OWASP support. Multiple features are available. AI and ML-based technology is available in almost every tool today. When discussing troubleshooting, there are AI models that will solve your problem and provide information. AI is helpful because it will give you proper information regarding errors and troubleshooting.
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

"The security features are valuable. The particular feature we use is called OWASP."
"It is a SaaS solution unlike much of the competition."
"Does a good job preventing web application attacks."
"Some of the most valuable features of Cloudflare Web Application Firewall include its DNS zone setup and the zero trust policy."
"Cloudflare WAF provides protection through rules and functionalities like Cloudflare's SDRAP."
"We like that there's load balancing, firewall capabilities, DDoS protection, et cetera, all covered by Cloudflare."
"I have not had any issues with this solution, and I would recommend it to others who are interested in using it."
"The rate limiting features and customizations in terms of URL match and applying policies are valuable to me."
"It is user-friendly and easy to work with."
"The stability of the solution is excellent."
"I utilize Fortinet FortiWeb Cloud WAF-as-a-Service's AI-driven analytics, which is in the sixth generation of AI, and this is helping us protect against AI-based attacks, API-based attacks, and bot attacks."
"The initial setup is pretty easy, and it is easier than for the on-premises solution."
"I rate the overall solution ten out of ten."
"Fortinet has created a holistic product that integrates features including AI and API protection, with straightforward automation and articulate reporting that even less experienced engineers can use easily."
"It is more efficient and very helpful to everyone regarding future updates of Fortinet FortiWeb Cloud WAF-as-a-Service, and I do not currently face any issues and have good experience with the product."
"Fortinet FortiWeb Cloud WAF-as-a-Service is a dedicated WAF product that handles all DOS protection, bot protection, API security, endpoint connectivity, signature-based support, and top 10 OWASP support."
"The product's most valuable feature is its ability to set up the rules easily."
"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"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."
 

Cons

"A key challenge arises when dealing with numerous integrations with HVAC systems. Depending on the specifics, there might be some configuration mismatches, which necessitate specific support."
"Support can be challenging at times."
"Its stability could be better."
"We have noticed some latency when the call goes through the firewall. That could be improved."
"The dashboard could be more user-friendly."
"The solution's learning curve can still be further reduced"
"If they add logs history within the Cloudflare offering, that would be a great benefit."
"The user interface is very simple and straightforward, but users need knowledge about DNS to accomplish tasks."
"The usability of the interface could be improved as it is not user-friendly."
"It is expensive. Actually, it is expensive."
"What I think could be improved in the future is the inclusion of runtime application self-protection, as RASP is currently not part of the program, but it would be beneficial if that could be added into the FortiAP-S Cloud product."
"The only thing I encountered was related to integration, mostly concerning translation."
"I do not have any notes on improvement."
"Fortinet FortiWeb Cloud WAF-as-a-Service could be improved with better logging capabilities, as many come with less spacing, necessitating a FortiSIM for enhanced functionality."
"The utilization of AI in Fortinet FortiWeb Cloud WAF-as-a-Service still needs to be upgraded and improved."
"The usability of the interface could be improved as it is not user-friendly."
"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."
"Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic."
"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 and Cost Advice

"The solution's pricing option needs to be more transparent for enterprise clients."
"What's my experience with pricing, setup cost, and licensing? I believe the pricing is not the best, but it's reasonable and acceptable. We also use the McAfee system in parallel. In terms of pricing, its okay - not great, but not bad either. It falls in the middle, which is acceptable. In terms of support licensing, last time, we were searching for a solution, and we considered products from resellers rather than directly from the cloud provider. However, the pricing we encountered was exceptionally high. As a result, we are inclined to select support from the reseller."
"We pay $210 per month for CloudFlare WAF."
"It is not too pricey."
"The annual licensing fee is $10,000 USD."
"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"It starts at $20 and can easily go up to $200 monthly"
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
Information not available
"The pricing is 50% less than Akamai."
"The product has an affordable cost."
"Signal Sciences is pretty cheap compared to other solutions."
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Top Industries

By visitors reading reviews
Construction Company
13%
Computer Software Company
9%
Manufacturing Company
8%
Comms Service Provider
8%
Financial Services Firm
13%
Comms Service Provider
10%
Manufacturing Company
9%
Energy/Utilities Company
9%
Manufacturing Company
13%
Retailer
10%
Financial Services Firm
8%
Construction Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise6
Large Enterprise6
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
No data available
 

Questions from the Community

What needs improvement with Cloudflare Web Application Firewall?
I don't see room for improvement to Cloudflare Web Application Firewall. One thing I don't know much about because we...
What is your primary use case for Cloudflare Web Application Firewall?
We are using Cloudflare Web Application Firewall's advanced reporting and analytics tools with their Zero Trust, so e...
What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
It is expensive. Actually, it is expensive. When discussing small organizations, I would not recommend it to them. I ...
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
Currently, I want to add that Fortinet FortiWeb Cloud WAF-as-a-Service is offering only two-factor authentication. I ...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
When discussing Fortinet FortiWeb Cloud WAF-as-a-Service, I always recommend it. Either I can recommend F5. Most user...
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-makin...
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 i...
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 ma...
 

Comparisons

 

Also Known As

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

Overview

 

Sample Customers

crunchbase, udacity, marketo, okcupid, zendesk
Information Not Available
Chef, Adobe, Datadog, Etsy, GrubHub, Vimeo, SendGrid, Under Armour, Duo, AppNexus
Find out what your peers are saying about Fortinet FortiWeb Cloud WAF-as-a-Service vs. The Fastly Next-Gen WAF (powered by Signal Sciences) and other solutions. Updated: March 2026.
885,311 professionals have used our research since 2012.