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Fortinet FortiWeb Cloud WAF-as-a-Service vs Imperva Web Application Firewall comparison

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Comparison Buyer's Guide

Executive Summary

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
Sponsored
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
76
Ranking in other categories
CDN (1st), Distributed Denial-of-Service (DDoS) Protection (1st), Managed DNS (1st), Cloud Security Posture Management (CSPM) (13th)
Fortinet FortiWeb Cloud WAF...
Average Rating
9.0
Reviews Sentiment
8.7
Number of Reviews
4
Ranking in other categories
Web Application Firewall (WAF) (25th)
Imperva Web Application Fir...
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Web Application Firewall (WAF) (7th)
 

Featured Reviews

Carlos Alam Hernandez Baruch - PeerSpot reviewer
Fast and secure deployments simplify operations for government and fintech clients
It is a fast and secure DNS. It is very easy to deploy, and my customers are happy with this tool. Additionally, the CDN performance in Mexico is excellent, providing fast service and tools. It offers reliability during high-traffic periods, ensuring no impact on the environment. It helps my clients avoid using on-premise boxes, simplifying operations as they only use the prices on Cloudflare.
Lilian Blaitt - PeerSpot reviewer
Efficiently identifies and addresses vulnerabilities while providing robust protection
It is a secure tool. It is user-friendly and easy to work with. It is possible to easily find vulnerabilities with the WAF. I understand that the return is good since I haven't had any significant attacks. The vulnerabilities I found were easy to close. I think the return is good. It is a good tool.
Mitesh D Patel - PeerSpot reviewer
Effectively defends against threats like cross-site scripting (XSS), SQL injection, and others
It does bring value. For example, consider a BFSI customer. Their application is critical and represents their brand. Without a WAF, an attack could take their application down, harming their reputation. It leads to hampering the customer's workflow. With an Imperva WAF, they protect against attacks like DDoS or SQL injection, ensuring their application remains available and customers are happy. That's the main benefit for both the customer and the organization. The impact depends on the customer's use case. If their business primarily operates online, a CDN is beneficial for traffic optimization. Moreover, the integration options depend on the specific use case of our customers. Generally, integration capabilities are good with SIEM (Security Information and Event Management) parts.

Quotes from Members

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

Pros

"Its most significant benefit to date is the speed with which it refreshes DNS records on the internet once you change it. If you are changing a website or registering a new record, it is very quick."
"The features of Cloudflare were found to be more beneficial and led to the decision to utilize it over other options."
"The solution provides good load balancing and protection against DDoS attacks."
"The most valuable feature is its usability."
"It's very user-friendly."
"Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications."
"Generally, I am satisfied with this product."
"Even when there is a high load on our servers, Cloudflare is able to cache the data and serve it to users, ensuring they can still access the website."
"The company provides technical support, and they are mostly available 24/7."
"Fortinet FortiWeb offers a variety of protections, including machine learning that helps protect web applications."
"It is a secure tool."
"I rate the overall solution ten out of ten."
"The stability of the solution is excellent."
"The technical support is really good."
"It is user-friendly and easy to work with."
"The most valuable feature of Imperva, in addition to its strong knowledge base, is its effective protection for web applications."
"The valuable features of Imperva WAF include its effective security breach prevention through automatically updating rules."
"The compliance is the most valuable aspect."
"Imperva is easy to use and deploy. The UI is excellent."
"It has fewer false positives"
"Very scalable and very stable firewall for web applications, with a good interface in its cloud version. Mitigation is its most valuable feature. The technical support for this product is also good."
"The most valuable features of the Imperva Web Application Firewall are performance and flexibility. We can extend or customize the box itself."
"It is easy to use and has good security."
 

Cons

"Even if I wanted to, I wouldn't be able to buy Cloudflare in my country."
"The reporting can definitely be improved to offer a lot more explanation on something that may have happened or has actually happened."
"DNS Management."
"There should be a specific price list for enterprise-level customers."
"Support response time could be improved."
"I would like Cloudflare to offer a dedicated account manager for large enterprise clients like us."
"The analytics, basically the dashboard, doesn't have much to it."
"Cloudflare's console should be made more user-friendly."
"I do not have any notes on improvement."
"The usability of the interface could be improved as it is not user-friendly."
"The only thing I encountered was related to integration, mostly concerning translation."
"The usability of the interface could be improved as it is not user-friendly."
"The only disadvantage of Imperva is that it is a pretty costly solution."
"An improvement for Imperva WAF would be to reduce the number of false positives and create more strong use cases based on AI/ML or behavioral analytics."
"Imperva Web Application Firewall is a good system, but we found that the visibility of the diverse-path server, e.g. where the traffic is coming from, the different IPs, etc., needs improvement."
"If they can bring in generative AI features, that would be useful."
"I loved the approach of the cloud. The cloud has a lot of new features, like advanced web protection and DDoS protection. If those could also be on-boarded onto the on-prem versions, that would be ideal. They need to pay attention to both deployment options and not just favor one."
"I am looking for more data enrichment. We should have the ability to add our own custom data to the system, to the live traffic."
"Imperva Web Application Firewall could improve the API integration. It was complex for us. Additionally, The onboarding could be better."
"The Imperva Web Application Firewall automations are good, but there is still room for improvement with them."
 

Pricing and Cost Advice

"The pricing depends on the usage, but the cheapest would be around 5,000 USD a month."
"The product's pricing is cheap."
"For Cloudflare, I recommend it heavily for small businesses with revenue under a couple of million dollars. Onboarding is easy, and they even have a free plan. This makes it simple for businesses in the $100,000-$500,000 range to try it out and see its value, allowing them to scale up their infrastructure as needed."
"The price is reasonable."
"We are using the free version."
"There are no additional costs beyond the standard licensing fees."
"A free version of the solution is available."
"We are using the free tier of the solution."
Information not available
"The price of this solution is a little bit high compared to competitors."
"Make sure you understand the way that Imperva charges. It's very affordable. However, I would like to see a package with the Virtual Patching included. You get to do patching separately."
"It's an excellent product, but it can be very costly."
"Imperva Web Application Firewall is expensive."
"Licensing can range from one to twenty thousand dollars annually. Additionally, some features, including software support, require an annual subscription as well."
"Imperva Web Application Firewall price is higher compared to other solutions. However, everything is included in the price."
"It is very costly, but the return on investment is very high. Its cost was around $70,000, and we got it back in just six months."
"Imperva’s pricing is a bit higher in the market since it offers a full-blown WAF."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Comms Service Provider
11%
Financial Services Firm
9%
Manufacturing Company
7%
No data available
Financial Services Firm
15%
Computer Software Company
12%
Insurance Company
8%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

Which is the best DDoS protection solution for a big ISP for monitoring and mitigating?
Cloudflare. We are moving from Akamai prolexic to Cloudflare. Cloudflare anycast network outperforms Akamai static GR...
Which would you choose - Cloudflare DNS or Quad9?
Cloudflare DNS is a very fast, very reliable public DNS resolver. It is an enterprise-grade authoritative DNS service...
What do you like most about Cloudflare?
Cloudflare offers CDN and DDoS protection. We have the front end, API, and database in how you structure applications.
What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
The price is not the cheapest, but it offers great value for money. I would rate it as an eight out of ten for pricing.
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
While we find the solution to be really good overall, some improvements could be made to the alerting system, specifi...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
We use Fortinet FortiWeb Cloud WAF-as-a-Service situated in front of our web-facing APIs. This includes everything th...
Is Citrix ADC (formerly Netscaler) the best ADC to use and if not why?
For ADC, any ADC can do a good job. But in case if you want to add WAF functionality to the same ADC hardware you hav...
DDoS solutions: Any other solutions to consider aside from Radware DDoS Protection Service and F5 Silverline DDoS Protection?
You can have a look to Imperva Cloud WAF, the anti-DDoS mitigation is under 1s and works very well. I observed a lot ...
 

Also Known As

Cloudflare DNS
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Overview

 

Sample Customers

Trusted by over 9,000,000 Internet Applications and APIs, including Nasdaq, Zendesk, Crunchbase, Steve Madden, OkCupid, Cisco, Quizlet, Discord and more.
Information Not Available
BlueCross BlueShield, eHarmony, EMF Broadcasting, GE Healthcare, Metro Bank, The Motley Fool, Siemens
Find out what your peers are saying about Fortinet FortiWeb Cloud WAF-as-a-Service vs. Imperva Web Application Firewall and other solutions. Updated: July 2025.
865,484 professionals have used our research since 2012.