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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)
6th
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 (5th), Microsoft Security Suite (18th)
The Fastly Next-Gen WAF (po...
Ranking in Web Application Firewall (WAF)
33rd
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 August 2026, in the Web Application Firewall (WAF) category, the mindshare of Cloudflare Web Application Firewall is 3.8%, down from 5.8% compared to the previous year. The mindshare of Azure Front Door is 2.9%, down from 5.3% compared to the previous year. The mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) is 1.1%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Cloudflare Web Application Firewall3.8%
Azure Front Door2.9%
The Fastly Next-Gen WAF (powered by Signal Sciences)1.1%
Other92.2%
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

"In general, it's a very good product: the solution is very stable, the performance is great, the product offers very good scalability, the pricing is very reasonable, the installation is very straightforward and quite simple, and technical support has a very fast response time and is helpful."
"It's pretty convenient and pretty easy to set up and run. And then kind of for static content, it also offers caching."
"We extensively use the solution every day. The solution is very stable; we haven’t seen any glitches."
"Technical support has a very fast response time and they are helpful."
"It is a SaaS solution unlike much of the competition."
"The stability of Cloudflare Web Application Firewall deserves a perfect 10 out of 10."
"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."
"The solution is good."
"I particularly appreciate its load-balancing capabilities as it allows us to manage multiple instances and support a global presence effectively."
"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."
"The most valuable feature is that I can have CDN and load-balancing capabilities in a single service instead of managing two separate tools."
"It works perfectly and you can assign as many web application firewall policies as you want to the same instance of Front Door."
"The price is one of the most important aspects of the product; it's quite affordable, and the ease of the implementation is really vital because it's very easy to implement for our customers as we simply handle the first phase and Microsoft does all the rest."
"The tool is easy to use for beginners."
"Azure Front Door provides DDoS protection and features related to 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."
"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."
"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

"They have some limitations with third-party integrations."
"Its stability could be better."
"There could be an option to duplicate the cluster to maintain the consistency of rules."
"Cloudflare Web Application Firewall should improve visibility for a customer."
"Support can be challenging at times."
"The solution's learning curve can still be further reduced"
"The dashboard could be more user-friendly."
"The blocked logs are difficult to read at times."
"The product's features are limited compared to Cloudflare. The tool also doesn't work well in a hybrid environment. I would like to see a way to add personalized APIs in the system."
"My suggestion for improvement would be to enhance the Data Export feature to include specific tables, particularly the Azure Diagnostics table."
"They can lower the price. Lowering the price should encourage customers to use and adopt Azure Front Door, especially since some customers are not using any security features."
"There could be improvements regarding its pricing for large-scale projects."
"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."
"This is a relatively expensive solution."
"I dislike the URL set parameters."
"There's a limitation on the amount of global rules we can add."
"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."
"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 and Cost Advice

"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."
"It is not too pricey."
"We pay $210 per month for CloudFlare WAF."
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"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."
"The annual licensing fee is $10,000 USD."
"The transition to the premium tier has led to increased costs, making it more expensive than the classic tier."
"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 solution is a bit expensive."
"The product is expensive."
"It is on a pay-as-you-go basis."
"Signal Sciences is pretty cheap compared to other solutions."
"The product has an affordable cost."
"The pricing is 50% less than Akamai."
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Top Industries

By visitors reading reviews
Construction Company
16%
Financial Services Firm
9%
Comms Service Provider
9%
Outsourcing Company
8%
Financial Services Firm
12%
Computer Software Company
9%
Manufacturing Company
9%
Comms Service Provider
7%
Manufacturing Company
10%
Retailer
10%
Financial Services Firm
8%
Comms Service Provider
8%
 

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: August 2026.
909,563 professionals have used our research since 2012.