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Microsoft Defender for Cloud Apps vs Proofpoint Cloud App Security Broker comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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

iboss
Sponsored
Ranking in Cloud Access Security Brokers (CASB)
6th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
24
Ranking in other categories
Secure Web Gateways (SWG) (6th), Internet Security (3rd), Web Content Filtering (1st), ZTNA as a Service (6th), Secure Access Service Edge (SASE) (6th)
Microsoft Defender for Clou...
Ranking in Cloud Access Security Brokers (CASB)
4th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
42
Ranking in other categories
Advanced Threat Protection (ATP) (17th), Microsoft Security Suite (8th)
Proofpoint Cloud App Securi...
Ranking in Cloud Access Security Brokers (CASB)
17th
Average Rating
8.2
Reviews Sentiment
7.7
Number of Reviews
5
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2026, in the Cloud Access Security Brokers (CASB) category, the mindshare of iboss is 4.5%, up from 2.0% compared to the previous year. The mindshare of Microsoft Defender for Cloud Apps is 5.8%, down from 8.0% compared to the previous year. The mindshare of Proofpoint Cloud App Security Broker is 0.9%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Access Security Brokers (CASB) Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Cloud Apps5.8%
iboss4.5%
Proofpoint Cloud App Security Broker0.9%
Other88.8%
Cloud Access Security Brokers (CASB)
 

Featured Reviews

Ashok Ananthula - PeerSpot reviewer
Senior Consultant Proxy Engineering at a financial services firm with 10,001+ employees
Cloud gateway has strengthened remote web security and now needs better Mac and ISP support
The problem our organization had is that iboss failed for the Mac devices. It is not able to give a successful agent for the Mac agents. That is where in 2025, we had to migrate to the Palo Alto-based platform. If your use case is for just Windows laptops,you can consider this platform as an option One issue is the data center resiliency part. In India especially, they are not tied up with the Tier 1 ISPs like Tata or Airtel; they were having Tier 2 ISPs and encountered many issues reaching few major sites that my organization depends on, and they were having problems that they could not fix quickly. They also lack a mechanism to route that traffic within their data center; rather, they ask customers to make a pac file change to route it to Singapore explicitly. It would be better if they route from their backend , i mean even if I send it to India DC, they should be able to route it internally to make that work; however, they fail to do that and ask the customer to route it in the pac file. Another suggestion is that in China, they do not have the proper setup; they used to have numerous problems with slowness and lack of premium circuits in China as well. That leads to multiple sites working slowly with latency-related issues. So the main issue is the ISP-related problems that need to be solved.
Abdulrahman Muhammadi - PeerSpot reviewer
information Security and IT Manager at Discover Dollar Technologies Pvt Ltd.
Integration with existing cloud workflows has simplified compliance and threat detection
Licensing cost is a significant concern. With Defender Plan 1, Microsoft Defender for Cloud Apps comes with a pay-per-use model. Each feature has its own pricing when activated on VMs. For example, the vulnerability assessment has separate pricing, the base model including encryptions has separate pricing, and the compliance features have separate pricing. This applies to each VM and Azure resource individually. It is not straightforward where you can take one license and apply it to everything. Each feature has its own pricing model which can be tedious, as the costs keep accumulating. The only lacking feature currently is XDR (extended detection and response). Apart from that, I have only positive experiences with the whole Microsoft suite, except for the pricing structure.
Farzad Ebrahimi - PeerSpot reviewer
Senior Devsecops Cloud Cybersecurity Specialist at CGI
Layered security has protected our cloud AI apps and significantly reduced attack incidents
The best features Proofpoint Cloud App Security Broker offers are multilayer protection against security attacks and escalation. The escalation feature in Proofpoint Cloud App Security Broker is valuable because we are using more and more users, and it is very scalable in relation to the number of users using the same app on the cloud. The performance of Proofpoint Cloud App Security Broker stands out as the number of attacks blocked is more than 90%. Proofpoint Cloud App Security Broker has positively impacted my organization by resolving all of the security issues related to app security. I can share specific outcomes, such as a reduction in the number of incidents, which is more than 90% related to the past.

Quotes from Members

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

Pros

"As I mentioned, the return on investment is significant, as it saved our office locations' bandwidth because when you are working remotely at home, your internet traffic routes directly to iboss and will not go to your office building, saving bandwidth bottlenecks and ensuring that issues with our building internet circuits will not impact your internet connectivity because you are directly going to the iboss data center."
"It was a very easy product to install. It can be deployed very fast."
"Granular setup, which was able to set different levels of filters using the OUs in the AD."
"Our primary use case for this product is DLP,"
"The iboss solution gives me the ability to scan the traffic through all the ports, through all the 131,000 PCP and UDP ports, and with this ability, we have the granularity also for consults over social media and applications on mobile, and this is an advantage that the customers are looking for right now."
"iboss is definitely very good in terms of service."
"iboss is pretty scalable. They provide good support. The case managers you work with to coordinate what you need are pretty good."
"I would definitely recommend iboss for web filtering purposes to other organizations or individuals."
"The solution is helping a lot; we get very detailed reporting on security that really shows what users are doing, including what they've opened, what they're sharing, downloading, viewing, and when they are logging in."
"It gives our clients a sense of confidence that in case there are activities on some of their applications, they will get an alert and the issue will be mitigated, based on the action that has been set."
"We have seen a 35% to 45% cost reduction with this solution."
"Microsoft Cloud App Security brings them together onto the same platform from a security standpoint, and the application can run seamlessly across different clouds, which helps."
"There are a lot of features with benefits, including discovery, investigation, and putting controls around things. You can't say that you like the investigation part but not the discovery. Everything is correlated; that's how the tool works."
"The most valuable features of Microsoft Defender for Cloud Apps include live, up-to-date information, which provided real-time alerts, and the ability to delve into detailed metadata information."
"I like the web GUI/the management interface, and I also like the security of Microsoft because, as compared to other manufacturers, it's less complex and easy to understand and work with."
"From a security monitoring perspective, there is a productivity improvement and fewer human errors."
"The product is stable."
"From stability and availability standpoints, it is pretty good."
"Proofpoint Cloud App Security Broker has positively impacted my organization by resolving all of the security issues related to app security."
"The tool's most valuable feature is reporting. It helps us understand what's going on in our environment."
"The quarantine feature is the solution's most valuable aspect."
 

Cons

"For zero trust implementation, we encountered complexity issues, especially with a large infrastructure company ExxonMobil."
"Their on-premise hardware's network interface is capped at one gigabit, which is sort of a problem. If you stand a filter up where all traffic flows through that, according to them, in order to go above a gigabit, you have to have multiple devices, which in today's IT seems a little bit silly. They could easily put in an SFP port into their device that could accommodate 10 gigs or at least offer a box."
"The dashboards for local use could be better."
"The easiest device I have set up was the Barracuda line of products."
"Our iboss subscription access should be more secure with an OTP or VPN etc. It is easy to gain access if, for example, hackers obtain my username and password."
"The endpoint-type solution is an area that needs some improvement."
"If they could implement an extra security layer preventing access to iboss from the open internet, it would be great."
"Iboss is growing so fast that it is often hard for them to keep up with the challenges."
"Microsoft Defender for Cloud Apps' initial setup was quite technical but we were prepared. The time of the implementation depends on the job and how many users are being set up."
"The graph displayed in the Defender portal mostly doesn't capture the full picture as we see in endpoint-related or identity-related alerts; we can see a complete graph of what is happening there, but Microsoft Defender for Cloud Apps still falls short in capturing that whole aspect in the graph."
"Sometimes, we'll get false positive alarms. For example, when a SharePoint path has no file sharing, but there is an external user, it will trigger an alarm that the file has been shared with an external user... the alerting mechanism should be more precise when giving you an alert about what activity has been done with the file..."
"I would like to see them include more features in the older licenses. There are some features that are not available, such as preventing or analyzing cloud attacks."
"I would prefer to have filtering options incorporated within the policies, enabling the solution to perform tasks beyond mere blocking or allowing."
"It doesn't actually decrease the time to respond. This has been an issue with Microsoft recently. Sometimes, there is a delay when it comes to getting an alert policy email... Sometimes it takes two or three hours for that email to be sent."
"The interface needs to be more user-friendly."
"MCAS doesn't have many reporting capabilities, and it's really an operational nightmare to get all these things done at this point in time by using MCAS."
"They are priced significantly higher and less cost-effective than alternative options."
"The TLS encryption needs to be improved. It's not state of the art."
"I think some of the hiccups that we had were with the number of domains that we had and how that had to be implemented in Proofpoint."
"Proofpoint Cloud App Security Broker should be cheaper."
 

Pricing and Cost Advice

"The overall pricing for iboss is very competitive and transparent."
"It is not expensive, and it is also not cheap. iboss is priced right in the sweet spot for the number of features it offers."
"It is expensive compared to one of its competitors."
"We had the cost of purchasing a new appliance along with the implementation and licensing costs. However, the following year, the cost of just licensing was similar to what was paid the previous year for a new appliance along with the implementation and licensing costs."
"It is probably in line with other solutions, but I do not deal with the financial side."
"We have not priced the solution recently, but they were competitive with other vendors in the past."
"Our clients normally use the Microsoft E1 licensing, which is renewed yearly."
"The pricing is in the middle. It isn't too cheap or expensive compared to other antivirus or security products. It is priced according to industry standards."
"The pricing is fair."
"Microsoft offers bundle discounts and a pay-as-you-go option."
"The price could be better and should be reconsidered."
"Where we are right now, this is an acceptable pricing. I would like to see more transparency given to the end user. The end user given to us is via the cloud service provider. There are different programs and license models. Some include this, and some include that. It is all over the place. There can be a little more consistency or simplification in the pricing so that your parts list is not ten pages long, and you are not trying to determine, "If I have an E3, does this cover that?", or "Do I need to pay separately for the license?" Simplification would probably be better."
"We have an educational licensing agreement. It's a customer agreement for multiple years."
"I'm not totally involved in the pricing part, but I think its pricing is quite aggressive, and its price is quite similar to Netskope. Netskope has separate licensing fees or additional charges if you want to monitor certain SaaS services, whereas, with MCAS, you get 5,000 applications with their Office 365. It is all bundled, and there's no cost for using that. You only have the operational costs. In the country I am in, it is a bit difficult to get people with the required skill sets."
"We had an enterprise contract with them for about 32,000 users at that point, which has now grown."
"The tool's most valuable feature is reporting. It helps us understand what's going on in our environment."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
9%
Comms Service Provider
8%
Computer Software Company
7%
Financial Services Firm
13%
Manufacturing Company
8%
Computer Software Company
8%
Comms Service Provider
7%
Financial Services Firm
17%
Outsourcing Company
13%
Computer Software Company
12%
Manufacturing Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise8
Large Enterprise10
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise13
Large Enterprise19
No data available
 

Questions from the Community

What needs improvement with iboss?
I think iboss could be improved by making reporting and dashboard customization more flexible, and simplifying troubl...
What is your primary use case for iboss?
I use iboss as a cloud-based secure web gateway to provide secure internet access, web filtering, and protect remote ...
What is your experience regarding pricing and costs for iboss?
My experience with iboss's pricing structure, setup cost, and licensing model has been positive, straightforward, and...
Which is the better security solution - Cisco Umbrella or Microsoft Cloud App Security?
Cisco Umbrella is an integral component of the Cisco SASE architecture. It integrates security in a single, cloud-nat...
What is your experience regarding pricing and costs for Microsoft Cloud App Security?
At the time of implementation, when the size of our organization was small, it was a more affordable product. Since a...
What needs improvement with Microsoft Cloud App Security?
The fidelity of the signal in Microsoft Defender for Cloud Apps has been a challenge in some areas. There have been i...
What needs improvement with Proofpoint Cloud App Security Broker?
Proofpoint Cloud App Security Broker can be improved with more AI features, as it could help. I feel it is fine to no...
What is your primary use case for Proofpoint Cloud App Security Broker?
My main use case for Proofpoint Cloud App Security Broker is to protect our applications on the cloud against securit...
What advice do you have for others considering Proofpoint Cloud App Security Broker?
My advice to others looking into using Proofpoint Cloud App Security Broker is that more AI features are needed. Proo...
 

Also Known As

iBoss Cloud Platform
MS Cloud App Security, Microsoft Cloud App Security
FireLayers, PCASB
 

Overview

 

Sample Customers

More than 4,000 global enterprises trust the iboss Cloud Platform to support their modern workforces, including a large number of Fortune 50 companies.
Customers for Microsoft Defender for Cloud Apps include Accenture, St. Luke’s University Health Network, Ansell, and Nakilat.
Emerging Technologies, HP, CSA, Perion
Find out what your peers are saying about Microsoft Defender for Cloud Apps vs. Proofpoint Cloud App Security Broker and other solutions. Updated: September 2026.
913,806 professionals have used our research since 2012.