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Fortinet FortiWeb Cloud WAF-as-a-Service vs Imperva Application Security Platform comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 21, 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

Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
18th
Average Rating
8.8
Reviews Sentiment
6.7
Number of Reviews
7
Ranking in other categories
No ranking in other categories
Imperva Application Securit...
Ranking in Web Application Firewall (WAF)
3rd
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
133
Ranking in other categories
CDN (2nd), Distributed Denial-of-Service (DDoS) Protection (4th), Bot Management (1st), API Security (2nd)
 

Mindshare comparison

As of February 2026, in the Web Application Firewall (WAF) category, the mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.8%, up from 0.4% compared to the previous year. The mindshare of Imperva Application Security Platform is 7.8%, up from 7.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Market Share Distribution
ProductMarket Share (%)
Imperva Application Security Platform7.8%
Fortinet FortiWeb Cloud WAF-as-a-Service0.8%
Other91.4%
Web Application Firewall (WAF)
 

Featured Reviews

RA
Global Head - DevOps and AIOps Startegist at a manufacturing company with 10,001+ employees
Cloud security has reduced web attack incidents and protects our public applications and APIs
The best features Fortinet FortiWeb Cloud WAF-as-a-Service offers include managed WAF rules, OWASP protection, bot mitigation, and Fortinet threat intelligence. In day-to-day work, I use all of the features: managed WAF rules, OWASP protection, bot mitigation, and Fortinet threat intelligence. This provides a strong baseline security without requiring deep WAF expertise internally. The integration with the broader Fortinet security system is a plus regarding the features. In terms of its impact on our organization, Fortinet FortiWeb Cloud WAF-as-a-Service has been positively protecting us from security threats and automated attacks. With this layered protection against common web and API attacks, we have noticed that the incidents and risks have been reduced to a greater extent.
reviewer1247523 - PeerSpot reviewer
Head of Sales Services Department at a comms service provider with 51-200 employees
Solution ensures website availability and proactive threat mitigation
Over the seven years, the most valuable features of Imperva DDoS that I have found are related to DDoS attacks, which are a group of attacks, and not all of them can be resolved on the endpoint level before the website. Using the web firewall before the website is a common use case to protect against malicious requests to the website. I have utilized Imperva's Intelligent Traffic Filtering feature. This feature helps me understand how the attack is progressing and what is happening inside the requests to our website. It allows me to granularly grant or deny access to certain parts of our website. This helps when we know our customers and the types of requests that can be sent from them, enabling us to block some malicious requests. Imperva DDoS has User Behavior Analytics and Threat Intelligence on its board, and this helps us to be protected proactively. Imperva DDoS connects to its database of threats, storing whole information about attacks all over the world in one simple engine. Everyone can use this feature, which can connect to this engine and get information about what is going on at the world level. That is the way to be protected at the company's level. The integration capabilities of Imperva DDoS are very easy and simple. We can run it in 2 hours.

Quotes from Members

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

Pros

"It is user-friendly and easy to work with."
"With this layered protection against common web and API attacks, we have noticed that the incidents and risks have been reduced to a greater extent."
"It is a secure tool."
"I rate the overall solution ten out of ten."
"The technical support is really good."
"Fortinet FortiWeb offers a variety of protections, including machine learning that helps protect web applications."
"Regular updates are one of the aspects I appreciate about Fortinet FortiWeb Cloud WAF-as-a-Service, and it is provided by a leading brand in cybersecurity."
"The company provides technical support, and they are mostly available 24/7."
"Compared to other web application firewalls in the market, Imperva does things in the most accurate way."
"One good thing about Imperva Web Application Firewall is it can be on the cloud and also it can be on-premise."
"On the real time, you can see live traffic, which is flowing into our website."
"It blocks all types of attacks."
"The most valuable feature of Imperva DDoS is to make our website available for our customers' requests 24 hours a day."
"On the site security, I can see which countries have incidents, whether it was a robot attack, a real human user, or non-human user."
"Gives us the ability to trace each connection, and to have logs to be able to differentiate between a positive and a false-positive intruder action."
"The bot management features are very effective, as they help filter unwanted traffic using keywords."
 

Cons

"The usability of the interface could be improved as it is not user-friendly."
"The utilization of AI in Fortinet FortiWeb Cloud WAF-as-a-Service still needs to be upgraded and improved."
"The usability of the interface could be improved as it is not user-friendly."
"Fortinet FortiWeb Cloud WAF-as-a-Service could be improved with better logging capabilities, as many come with less spacing, necessitating a FortiSIM for enhanced functionality."
"The only thing I encountered was related to integration, mostly concerning translation."
"I do not have any notes on improvement."
"Better visibility and more intuitive reporting would be helpful for Fortinet FortiWeb Cloud WAF-as-a-Service."
"I think that better bot protection is needed in this solution."
"It's quite expensive."
"It needs to be improved every time there are new attacks."
"The tool needs to improve CPU and storage memory."
"Imperva Web Application Firewall could improve the API integration. It was complex for us. Additionally, The onboarding could be better."
"Imperva DDoS does not provide version control."
"There could be some limitations that from the converged infrastructure perspective: when you want to converge with everything and you want Imperva to get there easily because it's not a cloud component. For example, when you want to build servers and you're using OneView to manage your software-defined networks, implementing Imperva right away is not that simple. But if you're doing just a simple cloud infrastructure with servers in there, you're good to go. Also, we are not able, with Imperva, to block by signatures. Imperva by itself needs to be complemented with another service to do URL filtering."
"There’s nothing that’s missing in terms of features."
 

Pricing and Cost Advice

Information not available
"There is a license for this solution and we purchase the license annually with no additional fees."
"The cost is somewhere around $10,000 a site. For every site, you pay individually. For every DNS entry, you have you pay."
"The tool's pricing is good."
"There is a license or subscription renewal that our customers pay."
"Licensing can range from one to twenty thousand dollars annually. Additionally, some features, including software support, require an annual subscription as well."
"The cost of this solution depends on the platform."
"The license is on a yearly basis."
"Imperva’s pricing is a bit higher in the market since it offers a full-blown WAF."
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Comparison Review

it_user68487 - PeerSpot reviewer
Security Expert with 51-200 employees
Nov 6, 2013
CloudFlare vs Incapsula: Web Application Firewall
CloudFlare vs Incapsula: Round 2 Web Application Firewall Comparative Penetration Testing Analysis Report v1.0 Summary This document contains the results of a second comparative penetration test conducted by a team of security specialists at Zero Science Lab against two cloud-based Web…
 

Top Industries

By visitors reading reviews
Financial Services Firm
14%
Energy/Utilities Company
11%
Manufacturing Company
9%
Comms Service Provider
8%
Financial Services Firm
12%
Computer Software Company
9%
Manufacturing Company
9%
Insurance Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise2
Large Enterprise3
By reviewers
Company SizeCount
Small Business83
Midsize Enterprise25
Large Enterprise61
 

Questions from the Community

What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
In terms of pricing, setup cost, and licensing, my experience with Fortinet FortiWeb Cloud WAF-as-a-Service has been good. Pricing aligns well with enterprise-grade managed WAF offerings. While not...
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
Better visibility and more intuitive reporting would be helpful for Fortinet FortiWeb Cloud WAF-as-a-Service. Clearer insights from Fortinet FortiWeb Cloud WAF-as-a-Service will make it easier to d...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
Our primary use case is protecting public facing web applications and APIs against OWASP Top 10 threats and automated attacks. Fortinet FortiWeb Cloud WAF-as-a-Service was used to protect a custome...
Which Web Application Firewall (WAF) would you recommend? R&S or Imperva?
Imperva is a strong choice, given their security focus and ongoing R&D into the product in areas such as bot management.
What do you like most about Imperva Incapsula?
We use Imperva DDoS to stop DDoS attacks and reduce the amount of unwanted queries against web services or web scraping.
What is your experience regarding pricing and costs for Imperva DDoS?
The pricing, setup costs, and licensing of Imperva DDoS are reasonable for the amount of technical capabilities provided. I would rate the pricing of Imperva DDoS as five, where one is very cheap a...
 

Also Known As

No data available
Imperva Bot Management, Imperva Web Application Firewall, Imperva API Security
 

Overview

 

Sample Customers

Information Not Available
Hitachi, BNZ, Bitstamp, Moz, InnoGames, BTCChina, Wix, LivePerson, Zillow and more.
Find out what your peers are saying about Fortinet FortiWeb Cloud WAF-as-a-Service vs. Imperva Application Security Platform and other solutions. Updated: December 2025.
881,665 professionals have used our research since 2012.