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Azure Front Door vs The Fastly Next-Gen WAF (powered by Signal Sciences) comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 1, 2025

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)
5th
Average Rating
8.6
Reviews Sentiment
7.4
Number of Reviews
26
Ranking in other categories
No ranking in other categories
Azure Front Door
Ranking in Web Application Firewall (WAF)
12th
Average Rating
8.8
Reviews Sentiment
7.4
Number of Reviews
16
Ranking in other categories
CDN (4th), Microsoft Security Suite (17th)
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 May 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 4.7%, down from 7.1% compared to the previous year. The mindshare of Azure Front Door is 2.8%, down from 4.0% 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 Firewall4.7%
Azure Front Door2.8%
The Fastly Next-Gen WAF (powered by Signal Sciences)1.3%
Other91.2%
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.
reviewer2226693 - PeerSpot reviewer
Architect at a tech vendor with 5,001-10,000 employees
Optimizing global application performance with robust security measures and advanced traffic management
DDoS capabilities in Azure Front Door could certainly be improved. Although Microsoft states it comes with basic DDoS protections out of the box, I find it often ineffectual in mitigating thousands of requests from a single source in a short span of time. User then have to rely on the WAF module where users must configure rate-limiting rules, as it does not automatically sense malicious spikes in traffic. I believe Front Door should have an out-of-the-box premium DDoS protection that can automatically detect and block malicious traffic. I would appreciate improvements in the turnaround time for support, especially since issues with Azure Front Door are usually critical for businesses. If there is an issue, it often results in downtime for line of business applications. I have faced this situation multiple times as one of the largest financial institutions in India is hosted there, adhering to strict SLAs that require prompt responses.
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

"Technical support has a very fast response time and they are helpful."
"It's pretty convenient and pretty easy to set up and run. And then kind of for static content, it also offers caching."
"Caching is the most valuable feature of Cloudflare Web Application Firewall."
"The rate limiting features and customizations in terms of URL match and applying policies are valuable to me."
"Cloudflare is cheaper compared to Azure WAF, which I have considered before."
"Cloudflare has positively impacted my organization by making it easier for me to handle and set up DNS for multiple clients; I can easily go in and access their accounts, make changes they need, and it's a one-stop shop."
"The Cloudflare Web Application Firewall's most valuable feature is its ease of configuration."
"The impact of Cloudflare Web Application Firewall's integration with existing web technologies on our site's performance and security measures is quite great, actually."
"It inspects the traffic at the network level before it comes into Azure. We can do SSL offloading, and it can detect abnormalities before the traffic comes into the application. It can be used globally and is easy to set up. It is also quite stable and scalable."
"It inspects the traffic at the network level before it comes into Azure, we can do SSL offloading, and it can detect abnormalities before the traffic comes into the application."
"Rules Engine is a valuable feature."
"The most valuable feature is that you can implement resources globally. It does not depend on location and ability or something like that. This is to connect clients around the world."
"Azure Front Door provides DDoS protection and features related to WAF."
"Azure Front Door's advanced routing rules for traffic management are highly effective, allowing you to configure HTTP tags, change different header or header response values, configure origin domains, and add security to your Layer 7 using these routing rules."
"Azure Front Door provides DDoS protection and features related to WAF."
"The price is one of the most important aspects of the product. It's quite affordable."
"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."
"When configuring a web application firewall using Signal Sciences, we configure a rule whereby no one except a few people can access the application."
"The product's most valuable feature is its ability to set up the rules easily."
"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."
 

Cons

"The reporting could be improved if it were more granular."
"The solution's learning curve can still be further reduced"
"They have some limitations with third-party integrations."
"The notification part could be improved. It's very much connected to Web Application Firewall, rate-limiting, and DDoS protection."
"There could be an option to duplicate the cluster to maintain the consistency of rules."
"We have noticed some latency when the call goes through the firewall. That could be improved."
"It would be ideal if the solution offered better log integration and more integration with different platforms."
"We don't even use Cloudflare Bot Management because it's too expensive; you need to pay per request, and it's much cheaper to get one or two additional machines."
"It lacks sufficient functionality."
"This is a relatively expensive solution."
"The user interface needs improvement as it is difficult to create the mapping to link the problem with your private address sources."
"My suggestion for improvement would be to enhance the Data Export feature to include specific tables, particularly the Azure Diagnostics table."
"There is room for improvement and they're working on it."
"There is room for improvement and they're working on it."
"The product needs to improve its latency."
"I'm responsible for the governance and cost control of Azure. I'm not a specialist in any products and therefore I couldn't really speak effectively to features that are lacking or missing."
"Fastly don't support caching for China users. That's the only feature lacking compared to Akamai."
"The UI is not very intuitive and could be better."
"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

"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"It is not too pricey."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"It starts at $20 and can easily go up to $200 monthly"
"The solution's pricing option needs to be more transparent for enterprise clients."
"We pay $210 per month for CloudFlare WAF."
"The solution is expensive."
"The product is expensive."
"It is on a pay-as-you-go basis."
"The transition to the premium tier has led to increased costs, making it more expensive than the classic tier."
"The solution is a bit expensive."
"The pricing of the solution is good."
"Considering the standard licensing of the tool, even though we have not checked the billing as of now, it might not be very costly."
"The product has an affordable cost."
"Signal Sciences is pretty cheap compared to other solutions."
"The pricing is 50% less than Akamai."
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Top Industries

By visitors reading reviews
Construction Company
17%
Comms Service Provider
9%
Financial Services Firm
9%
Manufacturing Company
7%
Financial Services Firm
13%
Computer Software Company
11%
Manufacturing Company
10%
Government
7%
Manufacturing Company
13%
Retailer
9%
Financial Services Firm
9%
Comms Service Provider
7%
 

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 Business9
Midsize Enterprise1
Large Enterprise9
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's the difference between Azure Front Door and Application Gateway?
We found Azure Front Door to be easily scaled and very stable. The implementation is very fast and Microsoft provides...
What is your experience regarding pricing and costs for Azure Front Door?
I am not sure about the pricing but believe Azure Front Door might require a higher cost due to its entry point nature.
What needs improvement with Azure Front Door?
DDoS capabilities in Azure Front Door could certainly be improved. Although Microsoft states it comes with basic DDoS...
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...
 

Also Known As

Cloudflare WAF
Azure Front-Door
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 Azure Front Door vs. The Fastly Next-Gen WAF (powered by Signal Sciences) and other solutions. Updated: April 2026.
894,668 professionals have used our research since 2012.