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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

"Caching is the most valuable feature of Cloudflare Web Application Firewall."
"The product has a valuable security control functionality."
"It protects web applications efficiently."
"Very glad the WAF rulesets works out of box, and requires very little tuning or maintenance."
"The initial setup process is simple."
"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."
"It is configurable via API."
"It is a SaaS solution unlike much of the competition."
"F5 Advanced WAF secures our connectivity and combines both the main functions of WAF (balancing and web application security)."
"The product is very stable; it is a PCI company, so there are 10,000-12,000 people using the solution, and all of the internet payments are behind the ASM for the F5."
"I like them because I like the security solution. They get extra marks compared to other solutions or competitors. There are more features than any other product I can think of. They're always monitoring, and the security features offer more than other, lesser products."
"We can monitor IP locations, but we have constraints from each country, it has a replication feature, and licenses can be shared, taking turns with each license."
"Provides good protection from attacks."
"I would recommend this solution to others who are interested in using it."
"After we introduced the web application firewall, it increased our ability to expose more of the services to the public."
"Overall, F5 Advanced WAF is a strong, dependable enterprise solution that works best when seen as a long-term security platform rather than a quick add-on; once properly designed, sized, and tuned, it runs quietly in the background and effectively does its job without constant attention."
"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."
"The product helps our organization to access sites located in different regions quickly."
"Compute@Edge features are valuable to me."
"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."
"The product's initial setup phase is straightforward."
"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."
"Its initial setup process is straightforward."
"Rate limiting is a good feature that protects from volumetric attacks."
 

Cons

"They have some limitations with third-party integrations."
"We have noticed some latency when the call goes through the firewall. That could be improved."
"The user interface is very simple and straightforward, but users need knowledge about DNS to accomplish tasks."
"It would be ideal if the solution offered better log integration and more integration with different platforms."
"The notification part could be improved. It's very much connected to Web Application Firewall, rate-limiting, and DDoS protection."
"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."
"Their documentation could be better. They don't have documentation that explains everything well."
"Cloudflare Web Application Firewall should improve visibility for a customer."
"Its price should be better. It is expensive."
"One improvement for AOF could be focusing on enhancing its AI engine to make it more mature."
"While F5 Advanced WAF does limit the number of partners in certain regions to ensure successful business transactions, they could also benefit from expanding their partnerships and making it easier for more people to learn about and become experts in F5 Advanced WAF. By doing so, they could increase the reach and exposure of their solution, similar to how Cisco has become widely recognized in the security industry."
"Users would like to have an additional IP intelligence license to handle this within WAF itself without needing to engage with the SOC team."
"Its price should be better. It is expensive."
"This solution can be made more user-friendly."
"F5 Advanced WAF could improve the precision of the scanning. There are many false positives."
"F5 Advanced WAF could improve resource usage, it is CPU intensive."
"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."
"It's not easy to start with Fastly if you don't have VCL knowledge, so it appears very complex at the beginning."
"Fastly's customer service area needs improvement."
"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."
"We are not getting quick responses from Fastly technical support engineers. Sometimes they depend on their D3 developers."
"The solution's pricing could be better."
"What I don't like about Fastly is that they charge a heavy price."
 

Pricing and Cost Advice

"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"
"It is not too pricey."
"Cloudflare Web Application Firewall is more affordable than other solutions."
"The solution is expensive."
"The solution's pricing option needs to be more transparent for enterprise clients."
"Cloudflare offers different types of subscriptions for businesses, enterprises, and personal users, and the pricing is negotiable."
"A yearly license for F5 Advanced WAF is expensive."
"It's more expensive than other solutions and depending on the modules, there can be additional fees."
"After buying the program, you just pay for the support every year."
"There is an annual subscription for this solution."
"The pricing for F5 Advanced WAF is comparable to a Rolls-Royce. Its price is a bit high when you compare it with other vendors. F5 Advanced WAF is a bit expensive. The customer was on a three-year plan and it was around $560,000."
"It is expensive. Its price should be better. Its licensing is on a yearly basis. Its licensing is also based on the model. There are no additional costs."
"There are different licenses available to use F5 Advanced WAF, such as BT, ASM, and LPM."
"I rate F5 Advanced WAF's pricing a three out of ten."
"The pricing has been very competitive."
"Fastly is less expensive than one of its competitors."
"The solution is cheaper than other products in the market."
"You need to pay a premium price for the tool."
"It is an expensive solution."
"In my opinion, Fastly is priced competitively."
"I've generally found Fastly to be very competitive in pricing, especially around Compute@Edge."
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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.
895,151 professionals have used our research since 2012.