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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

"Does a good job preventing web application attacks."
"The most valuable part of the solution for us overall is exactly that it is a Software-as-a-Service product."
"Caching is the most valuable feature of Cloudflare Web Application Firewall."
"The Cloudflare Web Application Firewall's most valuable feature is its ease of configuration."
"We like that there's load balancing, firewall capabilities, DDoS protection, et cetera, all covered by Cloudflare."
"There is a huge signature repository"
"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."
"Cloudflare WAF provides protection through rules and functionalities like Cloudflare's SDRAP."
"The bot defense capability, as well as protection from brute force attacks and OWASP Top Ten, are notable features."
"It's flexible and powerful, and the users can input their own rules to the system."
"The product is very easy to use and they provide great support."
"The WAF and APM are very useful, the solution has been mostly stable and reliable, and it can scale."
"Overall, the technical support is excellent."
"I definitely recommend this solution because of the time you save on analysis."
"iRules are quite appealing when it comes to F5."
"There is no need to worry about updating signatures because WAF will automatically update the signatures for you."
"Its initial setup process is straightforward."
"Fastly uses configuration versioning, where you can deploy a new version in less than one minute."
"The product helps our organization to access sites located in different regions quickly."
"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."
"In summary, this solution is easy to manage, quick to deploy, and all of my customers are happy."
"Rate limiting is a good feature that protects from volumetric attacks."
"The product's initial setup phase is straightforward."
"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."
 

Cons

"Its stability could be better."
"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."
"Cloudflare Web Application Firewall should include port forwarding features."
"If they add logs history within the Cloudflare offering, that would be a great benefit."
"The rate limiting functionality could be enhanced, as we find it somewhat limited."
"They have some limitations with third-party integrations."
"Their documentation could be better. They don't have documentation that explains everything well."
"The accuracy of the Cloudflare Web Application Firewall could be improved by reducing the number of false-negative alerts."
"The reporting could be clearer and embedded to include our movement data."
"The solution's dashboard could be improved. When you're moving from policy to policy, the logs and the integration of the logs in other systems aren't straightforward."
"For me, an area for improvement in F5 Advanced WAF is the reporting as it isn't so clear. The vendor needs to work on the reporting capability of the solution. What I'd like to see in the next release of F5 Advanced WAF is threat intelligence to protect your web application, particularly having that capability out-of-the-box, and not needing to pay extra for it, similar to what's offered in FortiWeb, for example, any request that originates from a malicious IP will be blocked automatically by FortiWeb. F5 Advanced WAF should have the intelligence for blocking malicious IPs, or automatically blocking threats included in the license, instead of making it an add-on feature that users have to pay for apart from the standard licensing fees."
"The BNS module needs improvement."
"The reporting portion of F5 Advance WAF is not great. They need to work out something better, as it is very basic. You only see the top IPs, I think there is more they can offer."
"The solution's dashboard could be improved."
"Users would like to have an additional IP intelligence license to handle this within WAF itself without needing to engage with the SOC team."
"I would like to see a better interface and better documentation compatibility with other products."
"The solution's pricing could be better."
"What I don't like about Fastly is that they charge a heavy price."
"Support is not that great."
"Fastly can be improved in certain areas such as VCL, which is powerful but has a steep learning curve for normal users."
"The product should provide improved bot detection and management."
"Fastly's customer service area needs improvement."
"Stronger analytics would be helpful, like showing configurations that haven't served a certain amount of traffic in a while. With many properties, things can get lost track of - duplicates or unused configurations not properly decommissioned."
"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."
 

Pricing and Cost Advice

"Cloudflare Web Application Firewall is more affordable than other solutions."
"We pay $210 per month for CloudFlare WAF."
"The solution's pricing option needs to be more transparent for enterprise clients."
"It starts at $20 and can easily go up to $200 monthly"
"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."
"The annual licensing fee is $10,000 USD."
"The solution is expensive."
"The pricing is too high."
"It is a little bit costly, but it has all the features that are required."
"I am not sure about pricing but licenses are available on Google."
"F5 bundles up services and the bundle is what you pay for rather than individual components."
"There is a perpetual license that comes with your hardware. There is also an additional fee for support."
"A yearly license for F5 Advanced WAF is expensive."
"I rate F5 Advanced WAF's pricing a three out of ten."
"The price of F5 Advanced WAF could improve it is expensive."
"I've generally found Fastly to be very competitive in pricing, especially around Compute@Edge."
"The solution is cheaper than other products in the market."
"It is an expensive solution."
"In my opinion, Fastly is priced competitively."
"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."
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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
15%
Computer Software Company
10%
Comms Service Provider
8%
Government
8%
Comms Service Provider
12%
Financial Services Firm
10%
Computer Software Company
9%
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 Business27
Midsize Enterprise16
Large Enterprise31
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 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 is your primary use case for F5 Advanced WAF?
My main use case for F5 Advanced WAF is providing deployment solutions for financial institutions and onboarding thei...
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.
894,830 professionals have used our research since 2012.