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F5 Advanced WAF vs Fastly 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
F5 Advanced WAF
Ranking in Web Application Firewall (WAF)
3rd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
72
Ranking in other categories
No ranking in other categories
Fastly
Ranking in Web Application Firewall (WAF)
20th
Average Rating
8.6
Reviews Sentiment
6.4
Number of Reviews
10
Ranking in other categories
CDN (7th), Distributed Denial-of-Service (DDoS) Protection (9th)
 

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 F5 Advanced WAF is 5.3%, down from 10.3% compared to the previous year. The mindshare of Fastly is 1.7%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
F5 Advanced WAF5.3%
Cloudflare Web Application Firewall4.7%
Fastly1.7%
Other88.3%
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.
reviewer2797602 - PeerSpot reviewer
Senior Security Systems Engineer at a tech services company with 11-50 employees
Granular security policies have protected critical applications and ensure safe user and admin access
Improvements could be made regarding the log information from the backend CLI. There are enhancements needed; if a request gets blocked on the TCP layer, there should be traces or data to verify which source generated these requests, including the source and port information for initiation. These data are missing from F5 Advanced WAF. Besides that, another improvement could be refining the bot detection to minimize false positives; it should be able to verify more granularly between legitimate and non-legitimate clients. Overall, I find everything else good. A wish list feature I have is for the Technical Assistance Center (TAC) to respond more promptly. Their response time needs improvement; while they do not take excessive time, it can be enhanced, especially given it is a security product.
Pranay Jain - PeerSpot reviewer
Senior software developer at Simplifyvms
Edge caching has transformed response times and delivers faster candidate data globally
Fastly can be improved in certain areas such as VCL, which is powerful but has a steep learning curve for normal users. A more user-friendly, UI-based configuration could simplify the experience, alongside better templates for common use cases and dashboard improvements, as the current dashboard feels complex for beginners, and pricing can be hard to predict for smaller companies. I chose 8 out of 10 because it has excellent performance and low latency delivery, making it suitable for larger applications, with strong Edge Caching and instant purging capabilities. However, VCL complexity and pricing predictability, especially for smaller companies, along with a user-friendly dashboard are areas impacting my score.

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."
"It is configurable via API."
"The Cloudflare Web Application Firewall's most valuable feature is its ease of configuration."
"Someone with a basic understanding of networking and security will be able to implement the firewall's basic features within 15 minutes."
"Very glad the WAF rulesets works out of box, and requires very little tuning or maintenance."
"For us, the key feature of Cloudflare is DDoS protection and IP hiding, especially since we are a crypto company."
"I'm highly satisfied. It's remarkably user-friendly, enabling me to quickly identify issues, and deploy solutions, and it offers the necessary features."
"The bot defense capability, as well as protection from brute force attacks and OWASP Top Ten, are notable features."
"The web application firewall itself is most valuable. It provides positive security and negative security. In negative security, it blocks a task such as cross-site scripting, code injection, etc. In positive security, it lets you specify and enforce things, such as the parameters allowed in username and password fields and the number of characters allowed in a field."
"It's scalable and very easy to manage."
"I definitely recommend this solution because of the time you save on analysis."
"The most valuable feature of F5 Advanced WAF is its ability to mitigate attacks: DDoS and DNS, or layer seven application attacks, OWASP, and email."
"The anti-bot protection is the solution's most valuable feature."
"The technical support is perfect."
"Provides good protection from attacks."
"Support is good; the product works as advertised. We have a Slack connection with them. So we can basically ask for help, live, engage, and ring when they respond. Very quickly."
"Rate limiting is a good feature that protects from volumetric attacks."
"Initially, we faced load time issues, but after deploying Fastly and optimizing our queries, we achieved a response time cut to less than 1 millisecond from an initial 3 to 4 seconds."
"In summary, this solution is easy to manage, quick to deploy, and all of my customers are happy."
"Fastly combines both the CDN side and the Signal Sciences next-generation WAF, which is closely integrated with the CDN, allowing us to use both products seamlessly."
"The product helps our organization to access sites located in different regions quickly."
"Its initial setup process is straightforward."
"Fastly provides CDN, WAF, image optimization, and IP restriction."
 

Cons

"The rate limiting functionality could be enhanced, as we find it somewhat limited."
"We have noticed some latency when the call goes through the firewall. That could be improved."
"The accuracy of the Cloudflare Web Application Firewall could be improved by reducing the number of false-negative alerts."
"Their documentation could be better. They don't have documentation that explains everything well. They have documentation for everything you're looking for, but they lack a single piece of documentation to tie everything together. As a new user or beginner, it took us a little bit of time to figure out how to put all these things in place."
"The notification part could be improved. It's very much connected to Web Application Firewall, rate-limiting, and DDoS protection."
"The product can improve by having more multitenancy capability, which is currently not available."
"The reporting could be more granular."
"The dashboard could be more user-friendly."
"F5 Advanced WAF could improve on its funding for WAF features. There is a need to be more advanced WAF features."
"The BNS module needs improvement."
"F5 Advanced WAF sells perpetual licenses as perpetual assets during sales without informing me that support ends after a few years."
"We usually use a third-party tool for logging and reporting. It would be nice if we could do that right on this solution. They have one, but it's not very stable. Logging and reporting effectively would be a big enhancement."
"This solution can be made more user-friendly."
"F5 Advanced WAF could improve on its funding for WAF features. There is a need to be more advanced WAF features."
"One improvement for AOF could be focusing on enhancing its AI engine to make it more mature."
"It's sometimes difficult to customize APIs with F5 Advanced WAF, which could be made easier."
"Support is not that great."
"It is missing a "staging" platform to deploy a test configuration with all of the real settings, which would allow us to properly test before putting it into production."
"Fastly's customer service area needs improvement."
"It's not easy to start with Fastly if you don't have VCL knowledge, so it appears very complex at the beginning."
"What I don't like about Fastly is that they charge a heavy price."
"The solution's pricing could be better."
"The product should provide improved bot detection and management."
"Fastly can be improved in certain areas such as VCL, which is powerful but has a steep learning curve for normal users."
 

Pricing and Cost Advice

"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."
"It is not too pricey."
"The pricing model is very straightforward compared to the competition. You just pay per month for the product and usage."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"The solution's pricing option needs to be more transparent for enterprise clients."
"The annual licensing fee is $10,000 USD."
"We pay $210 per month for CloudFlare WAF."
"It starts at $20 and can easily go up to $200 monthly"
"I rate F5 Advanced WAF's pricing a three out of ten."
"It is a little bit costly, but it has all the features that are required."
"The pricing of F5 Advanced WAF is more expensive than other solutions like Radware and CD18, it is quite high."
"A yearly license for F5 Advanced WAF is expensive."
"The way we deployed it, I would rate it a four out of five in terms of pricing."
"There are various plans available for Fortinet FortiWeb Cloud WAF as a Service, including a trial version."
"F5 bundles up services and the bundle is what you pay for rather than individual components."
"I am not sure about pricing but licenses are available on Google."
"The solution is cheaper than other products in the market."
"It is an expensive solution."
"I've generally found Fastly to be very competitive in pricing, especially around Compute@Edge."
"The pricing has been very competitive."
"You need to pay a premium price for the tool."
"Fastly is less expensive than one of its competitors."
"In my opinion, Fastly is priced competitively."
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Top Industries

By visitors reading reviews
Construction Company
17%
Comms Service Provider
9%
Financial Services Firm
9%
Computer Software Company
7%
Financial Services Firm
15%
Computer Software Company
10%
Government
8%
Comms Service Provider
8%
Comms Service Provider
12%
Financial Services Firm
11%
Computer Software Company
8%
Healthcare Company
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 Business28
Midsize Enterprise15
Large Enterprise30
By reviewers
Company SizeCount
Small Business6
Large Enterprise5
 

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 do you like most about F5 Advanced WAF?
It's a fairly easy-to-use and user-friendly tool. My administrators and team also like its ability to customize the r...
What is your experience regarding pricing and costs for F5 Advanced WAF?
The pricing for F5 Advanced WAF is a bit higher, but not that high. I would say for a good amount of revenue-generati...
What needs improvement with F5 Advanced WAF?
On the features I wish existed, Big-IP Advanced WAF is primarily an on-premises solution and in that solution, there ...
What needs improvement with Fastly?
I believe that Fastly should provide guidelines for their WAF blocking rules. It should be public what the rules are ...
What is your primary use case for Fastly?
I am using Fastly in the Adobe Commerce Cloud project. In this project, it is working as a reverse proxy for CDN and ...
 

Also Known As

Cloudflare WAF
No data available
No data available
 

Overview

 

Sample Customers

crunchbase, udacity, marketo, okcupid, zendesk
MAXIMUS, Vivo, American Systems, Bangladesh Post Office, City Bank
Twitter, Airbnb, Alaska Airlines, Pinterest, Vimeo, The Guardian, The New York Times, Ticketmaster, The Drupal Association, Opera, about.com, imgur, Etsy, Foursquare, GitHub, New Relic, shopify, Shazam, Firebase
Find out what your peers are saying about F5 Advanced WAF vs. Fastly and other solutions. Updated: April 2026.
893,221 professionals have used our research since 2012.