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

 

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

Azure Front Door
Ranking in Web Application Firewall (WAF)
13th
Average Rating
8.8
Reviews Sentiment
7.7
Number of Reviews
15
Ranking in other categories
CDN (2nd), Microsoft Security Suite (18th)
The Fastly Next-Gen WAF (po...
Ranking in Web Application Firewall (WAF)
27th
Average Rating
7.6
Reviews Sentiment
7.1
Number of Reviews
3
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2025, in the Web Application Firewall (WAF) category, the mindshare of Azure Front Door is 4.5%, down from 5.3% compared to the previous year. The mindshare of The Fastly Next-Gen WAF (powered by Signal Sciences) is 1.0%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF)
 

Featured Reviews

SayedAbdelrhman - PeerSpot reviewer
Provide bot protection and has proficient documentation
During our discussion with the internal Microsoft team about assessing our environment, they confirmed that we have sufficient security measures, especially regarding edge protection. Internally, we believe we are now certified. In the future, we could consider adding layer four protection from the firewall. Front Door combines CDN and WAF protection, so further enhancing its features could benefit both the customer and us. We monitor the number of users attempting to access our IP or DNS servers. When designing the system, we initially needed to ensure our environment was protected with a WAF. However, WAF is currently too costly for us, so we created private links and connected them to Front Door. Overall, I rate the solution an eight out of ten.
Archana Heeralal - PeerSpot reviewer
A good solution to implement web application firewall for applications
There are some lags in Signal Sciences for the web application firewalls. Even if we create some custom rules, Signal Sciences cannot capture some of the malicious traffic. There is a little bit of complexity with custom rules that should be removed. Signal Sciences should add a feature called rate limiting with multiple options, wherein I can create a rate limiting based on the cookie request or the IP.

Quotes from Members

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

Pros

"Has a great application firewall and we like the security."
"Rules Engine is a valuable feature."
"I am impressed with the tool's integrations."
"I find the technical support excellent, and I rate it a ten."
"The solution is good."
"The web application firewall is a great feature."
"The price is one of the most important aspects of the product. It's quite affordable."
"The tool is easy to use for beginners."
"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."
"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

"This is a relatively expensive solution."
"My suggestion for improvement would be to enhance the Data Export feature to include specific tables, particularly the Azure Diagnostics table."
"In the tool, there needs to be a good amount of monitoring in the area of health probes to capture in front of what is happening."
"The product needs to improve its latency."
"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."
"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."
"I dislike the URL set parameters."
"It lacks sufficient functionality."
"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."
 

Pricing and Cost Advice

"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 is expensive."
"It is on a pay-as-you-go basis."
"The pricing of the solution is good."
"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 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
Computer Software Company
16%
Financial Services Firm
14%
Manufacturing Company
8%
Healthcare Company
7%
Educational Organization
13%
Computer Software Company
12%
Manufacturing Company
10%
Financial Services Firm
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

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 excellent support. Azure Front Door can quickly detect abnormalities before the...
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 do you like most about Signal Sciences?
The product's most valuable feature is its ability to set up the rules easily.
What needs improvement with Signal Sciences?
Fastly don't support caching for China users. That's the only feature lacking compared to Akamai.
 

Also Known As

Azure Front-Door
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 Azure Front Door vs. The Fastly Next-Gen WAF (powered by Signal Sciences) and other solutions. Updated: June 2025.
856,873 professionals have used our research since 2012.