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

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 22, 2026

Review summaries and opinions

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

ROI

Sentiment score
4.2
Fortinet FortiWeb Cloud WAF-as-a-Service reduces security incidents and costs, offering effective protection and noticeable returns on investment.
Sentiment score
5.8
Imperva boosts security, reduces manual interventions, yielding quick ROI, especially in banking, though initial costs can be high.
They know how much money they are losing while the system is down, so by increasing the possibility of not having a down website or web application, return on investment can be calculated easily.
Head of Sales Services Department at a comms service provider with 51-200 employees
I was able to save over seven million dollars last year as return on investment in the company.
Senior Cybersecurity Consultant at Cyberoutcome Limited
I have seen a return on investment with Imperva Application Security Platform, as it is generally associated with time savings, because the review of alerts and the visibility it gives saves us significant operational time.
Ingeniero Preventa at Imperia
 

Customer Service

Sentiment score
7.5
Fortinet FortiWeb Cloud support is praised for fast, knowledgeable service, with minor delays manageable and high overall satisfaction.
Sentiment score
7.0
The Imperva Application Security Platform's support is praised for responsiveness but criticized for inconsistencies, especially between cloud and on-premises environments.
The company provides technical support, and they are mostly available 24/7.
Pre sale engineer at Harnssen Group Limited
The proximity of Fortinet with customers ensures quick issue resolution.
Security Specialist at a tech services company with 1,001-5,000 employees
Sometimes it could be faster, but generally, their support is reliable.
Principal Network Architect at a financial services firm with 201-500 employees
I would rate the technical support of Imperva DDoS as ten.
Head of Sales Services Department at a comms service provider with 51-200 employees
They need to work faster on the response time because of issues of urgent replies.
Senior Cybersecurity Consultant at Cyberoutcome Limited
Responsive support addressing urgent needs.
Cybersecurity Consultant at Accenture Singapore Services Pte Ltd
 

Scalability Issues

Sentiment score
6.2
Fortinet FortiWeb Cloud WAF-as-a-Service is scalable, efficient in handling traffic, easy to deploy, and highly rated.
Sentiment score
7.4
Imperva Application Security Platform offers scalable solutions for various organizations, with cloud deployment preferred despite some pricing and performance challenges.
It auto checks everything, and you need to install the certificate.
Pre Sales Architect at network techlab
In my experience, Fortinet FortiWeb Cloud WAF-as-a-Service's scalability is quite good, and I would rate it at eight point five out of ten.
Network and Security Engineer (Contractor) at Clymora Technology Limited
We are purchasing Fortinet FortiWeb Cloud WAF-as-a-Service from the distributor side, who have provided support and a price discount.
Owner at IT CARE
99% of customers are using the cloud version of Imperva DDoS protection, so they just purchase the new license and scale as needed.
Head of Sales Services Department at a comms service provider with 51-200 employees
I have not even needed support after deployment, since it has remained stable.
CTO at Malam Engineering PLC
It is easy to always scale to add more users.
Senior Cybersecurity Consultant at Cyberoutcome Limited
 

Stability Issues

Sentiment score
8.3
Users highly praise Fortinet FortiWeb Cloud WAF-as-a-Service for its stable and reliable performance, rating it highly.
Sentiment score
7.9
Imperva Application Security Platform is praised for stability and reliability, with minor issues occurring mainly during high traffic.
The stability of the solution is excellent.
Principal Network Architect at a financial services firm with 201-500 employees
It is also a stable product without much glitch or downtime.
Senior Presales Consultant at Techlab security
One notable drawback is that, unlike Fortinet, which offers fast track labs and continuous enablement, Imperva Application Security Platform lacks lab access and fast track labs for enablement and product advertising.
CTO at Malam Engineering PLC
We experienced downtime or crashes with Imperva Application Security Platform when traffic went really strong or fast because people tried to get tickets.
Soc Analyst at Cineplex Inc
 

Room For Improvement

Fortinet FortiWeb Cloud WAF-as-a-Service needs improved features, security measures, AI, pricing, integration, and reporting enhancements.
Imperva Application Security Platform needs better integration, simpler dashboards, improved AI, and enhanced user interface for higher satisfaction.
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.
Network and Security Engineer (Contractor) at Clymora Technology Limited
The utilization of AI in Fortinet FortiWeb Cloud WAF-as-a-Service still needs to be upgraded and improved.
Assistant Technical Director at a comms service provider with 11-50 employees
I want them to provide SAML authentication.
Pre Sales Architect at network techlab
To convince my clients, a purely on-prem solution would be ideal since they are financial institutions.
CTO at Malam Engineering PLC
Maybe Imperva DDoS could use endpoints to get information about the attacks before they commence from the endpoint level or establish cooperation with endpoint vendors to share this information.
Head of Sales Services Department at a comms service provider with 51-200 employees
Regarding return on investment, ROI, I can say it is noticeable with Imperva Application Security Platform.
Senior Presales Consultant at Techlab security
 

Setup Cost

Fortinet FortiWeb Cloud offers cost-effective WAF services with flexible payments, appealing to large enterprises despite not being the cheapest.
Imperva's Application Security Platform has high, complex pricing, yet some find it competitive for its security benefits and enterprise flexibility.
It is twice cheaper.
Pre sale engineer at Harnssen Group Limited
I just recommend Fortinet FortiWeb Cloud WAF-as-a-Service because it is very expensive.
Pre Sales Architect at network techlab
The price is not the cheapest, but it offers great value for money.
Principal Network Architect at a financial services firm with 201-500 employees
I would rate the pricing of Imperva DDoS as five, where one is very cheap and ten is very expensive.
Head of Sales Services Department at a comms service provider with 51-200 employees
the setup cost was high, with the hardware installation in the data center being particularly expensive.
Cyber Security Product Owner at a energy/utilities company with 10,001+ employees
We have noticed faster response times and fewer security alerts because after doing some custom policy tuning, everything seemed to be aligned and we have fewer attacks to monitor and fewer alerts to monitor.
Senior Cybersecurity Consultant at Cyberoutcome Limited
 

Valuable Features

Fortinet FortiWeb Cloud WAF-as-a-Service offers AI-driven security, easy integration, and adaptability with robust threat protection and reporting.
Imperva Application Security Platform offers robust threat protection, user-friendly interface, and comprehensive reporting for enhanced web security management.
It is possible to easily find vulnerabilities with the WAF.
IT Specialist at a manufacturing company with 10,001+ employees
It effectively mitigates web attacks, provides virtual protections, and handles large traffic with minimal processing effort.
Security Specialist at a tech services company with 1,001-5,000 employees
Its usability is a key aspect as it is very easy to use and deploy in front of new APIs.
Principal Network Architect at a financial services firm with 201-500 employees
The API security feature is particularly valuable because most attackers do not try to come in from where it is expected.
Senior Cybersecurity Consultant at Cyberoutcome Limited
If someone attempts to access the server, the WAF blocks that SSRF alert, or RCE, Remote Code Execution alert, blocking immediately based on the signature, not only by the payload or the IP address.
SOC Analyst L1 at CMS-IT-SERVICES-PVT-LTD
It reduces the DDoS attacks and reduces the attacks from threat actors, including SQL Injection and zero-day attacks, by using dynamic application profiling from Imperva.
IT Security Analyst & Engineer (Project, Remote) Australia-Europe at a manufacturing company with 10,001+ employees
 

Categories and Ranking

Fortinet FortiWeb Cloud WAF...
Ranking in Web Application Firewall (WAF)
22nd
Average Rating
8.8
Reviews Sentiment
6.4
Number of Reviews
10
Ranking in other categories
No ranking in other categories
Imperva Application Securit...
Ranking in Web Application Firewall (WAF)
1st
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
147
Ranking in other categories
CDN (2nd), Distributed Denial-of-Service (DDoS) Protection (4th), Bot Management (1st), API Security (1st)
 

Mindshare comparison

As of September 2026, in the Web Application Firewall (WAF) category, the mindshare of Fortinet FortiWeb Cloud WAF-as-a-Service is 0.8%, up from 0.6% compared to the previous year. The mindshare of Imperva Application Security Platform is 7.4%, down from 7.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Web Application Firewall (WAF) Mindshare Distribution
ProductMindshare (%)
Imperva Application Security Platform7.4%
Fortinet FortiWeb Cloud WAF-as-a-Service0.8%
Other91.8%
Web Application Firewall (WAF)
 

Featured Reviews

NiteshSharma - PeerSpot reviewer
Pre Sales Architect at network techlab
Comprehensive web protection has secured public apps and supports advanced audit requirements
Fortinet FortiWeb Cloud WAF-as-a-Service has multiple valuable aspects. The WAF solution secures whatever public domains have been published by the public platform or internal servers exposed to public users. Firewalls have limitations, which is why I suggest using a WAF solution. The firewall provides the same features but in a limited edition. When discussing the SaaS platform or Layer 7 layer of security, you will receive multiple benefits. Firewalls have limitations with signatures, bot protection, and DOS protection. Fortinet FortiWeb Cloud WAF-as-a-Service is a dedicated WAF product that handles all DOS protection, bot protection, API security, endpoint connectivity, signature-based support, and top 10 OWASP support. Multiple features are available. AI and ML-based technology is available in almost every tool today. When discussing troubleshooting, there are AI models that will solve your problem and provide information. AI is helpful because it will give you proper information regarding errors and troubleshooting.
reviewer2818155 - PeerSpot reviewer
Senior Associate at a tech vendor with 10,001+ employees
Application protection has improved and reporting and dashboards still need refinement
I believe Imperva Application Security Platform should have a more interactive wizard. While the dashboard is good, it could be more eye-catching. Based on my perspective, I recommend modifying the dashboards, especially the main dashboard where I can see the traffic hit count, alerts, and other latest information. In terms of reporting, I find it challenging to create reports; in my earlier days, it was difficult. Over time, I have learned how to create reports, but it should be easier to do so. I have used other tools such as firewalls or SolarWinds, where creating a report is straightforward and does not take much time, unlike in Imperva, where I have to add many elements. Modifications in the integration aspects would also be beneficial.
report
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Comms Service Provider
11%
Outsourcing Company
11%
Construction Company
10%
Outsourcing Company
12%
Financial Services Firm
11%
Construction Company
8%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
Large Enterprise5
By reviewers
Company SizeCount
Small Business88
Midsize Enterprise25
Large Enterprise70
 

Questions from the Community

What is your experience regarding pricing and costs for Fortinet FortiWeb Cloud WAF-as-a-Service?
It is expensive. Actually, it is expensive. When discussing small organizations, I would not recommend it to them. I always choose the enterprise because it is expensive. I just recommend Fortinet ...
What needs improvement with Fortinet FortiWeb Cloud WAF-as-a-Service?
Currently, I want to add that Fortinet FortiWeb Cloud WAF-as-a-Service is offering only two-factor authentication. I want them to provide SAML authentication. If it gets SAML authentication or some...
What is your primary use case for Fortinet FortiWeb Cloud WAF-as-a-Service?
When discussing Fortinet FortiWeb Cloud WAF-as-a-Service, I always recommend it. Either I can recommend F5. Most users require security via SSL, so I recommend Fortinet FortiWeb Cloud WAF-as-a-Serv...
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 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...
What needs improvement with Imperva DDoS?
I would like to see improvements in the pooling of threats and attacks, possibly to enlarge the scale of indicators of compromise. For example, the initiation of an attack on the endpoint level cou...
 

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: September 2026.
914,109 professionals have used our research since 2012.