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Microsoft Defender for Cloud Apps vs Zscaler Zero Trust Exchange Platform comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 2, 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

iboss
Sponsored
Ranking in Cloud Access Security Brokers (CASB)
7th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
19
Ranking in other categories
Secure Web Gateways (SWG) (5th), Internet Security (3rd), Web Content Filtering (1st), ZTNA as a Service (7th), Secure Access Service Edge (SASE) (8th)
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) (14th), Microsoft Security Suite (12th)
Zscaler Zero Trust Exchange...
Ranking in Cloud Access Security Brokers (CASB)
9th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
66
Ranking in other categories
Data Loss Prevention (DLP) (6th), Application Control (6th), ZTNA as a Service (1st), Secure Access Service Edge (SASE) (4th), Remote Browser Isolation (RBI) (1st)
 

Mindshare comparison

As of February 2026, in the Cloud Access Security Brokers (CASB) category, the mindshare of iboss is 2.5%, up from 1.7% compared to the previous year. The mindshare of Microsoft Defender for Cloud Apps is 6.5%, down from 10.1% compared to the previous year. The mindshare of Zscaler Zero Trust Exchange Platform is 9.0%, down from 9.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Access Security Brokers (CASB) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Cloud Apps6.5%
iboss2.5%
Zscaler Zero Trust Exchange Platform9.0%
Other82.0%
Cloud Access Security Brokers (CASB)
 

Featured Reviews

reviewer2701851 - PeerSpot reviewer
Managing Director
Enhances web security with a single pane of glass and flexible deployment
I don't see any need for improvement; one of the really good things about iboss as a company is that they listen to customer feedback. I have suggested enhancements, and they are responsive, making changes for the better, and they do a lot of testing. To improve iboss, although we haven't used it, we considered the VPN solution that comes with the highest tier licensing, which includes DLP and various other add-ons. We prefer using another product which automatically logs you back onto your network when turning on your PC. With iboss, the connection is manual, which doesn't meet our needs. Additionally, sizing can be tricky because, although the initial recommendations may seem adequate, actual usage may require more gateways than anticipated.
FV
Security and Continuity Manager at Rolinco NV
Deployment has been seamless with insightful data categorization and enhanced control
The features of Microsoft Defender for Cloud Apps that I have found most valuable include the overall portal view, with bubble graphs which give us insight into what goes where in the categorization, nowadays with Generative AI but all kinds of categorization, collaboration, etc. That central view of the portal is very useful for us. The impact of Microsoft Defender for Cloud Apps on our organization's ability to assess and manage app related risks has been significant because we have more visibility. Therefore, we can add more control, and we have already done so. This was not possible in the old solution, in the old CASB solution with Netskope. We now can see on the spot, and we do that almost weekly, what the end users are utilizing, which cloud providers or cloud apps they're using. The visibility into OAuth apps provided by Microsoft Defender for Cloud Apps is very good. The visibility into risk and risk management of our organization's Generative AI apps is very nice, as you can choose the category Generative AI and then see exactly what traffic has been going to and from Generative AI in the cloud. This makes us very insightful on what is used within the company. We have some policies on blocking specific Generative AI, and we use within our company one particular AI part, which is CoPilot of Microsoft. In this way, we can see what the end users are using other than CoPilot, and that makes us more in control. The effectiveness of the integration of Microsoft Defender for Cloud Apps with Defender XDR and defending against SaaS attacks is very intuitive. It works immediately if we create a new policy or in Purview or in Microsoft Defender for Cloud Apps, or when we make an app unsanctioned by blocking it, then it is almost immediately, or at least within a couple of hours, effective on all the endpoints where the EDR is running. This gives us much better control over things than before.
Zaheer_Khan - PeerSpot reviewer
Cybersecurity Senior Program Manager at Dayforce
Secure access has improved remote work and has reduced vulnerabilities across our workforce
Zscaler Zero Trust Exchange Platform probably needs to be more efficient because scanning takes a lot of time. Some vulnerabilities create issues, and when we wanted to identify the source of the vulnerabilities, specifically focusing on mobile ID and related areas, it was unable to provide assistance. However, according to discussions with Zscaler Zero Trust Exchange Platform, they said that by the end of mid-2026, they are exploring these features, and probably those features can be incorporated or embedded into this particular system. That is the only major negative point.In terms of responses, Zscaler Zero Trust Exchange Platform is good. In terms of controlling vulnerability, it is good. The only cons I have noticed is that it is a bit slower, and sometimes it is unable to identify the source. These are the key areas for improvement.

Quotes from Members

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

Pros

"I would definitely recommend iboss for web filtering purposes to other organizations or individuals."
"We chose iboss for both zero trust and proxy (SWG) because their SWG was superior."
"It was a very easy product to install. It can be deployed very fast."
"Valuable features: Within the filter: Controls (Web categories, applications, and Allow/Block list) and Network (local Subnets). Within the reporter: Logs (Event Log) and Reports."
"Iboss is a solution that prevents advanced persistent threats, and has a zero tolerance for attacks."
"From a use-case scenario, what I like the most is the plug-in. I like the fact that we can do the filtering of these devices offsite independent of the network they are connected to, and we do not have to have traffic coming back inside our network."
"The security aspect of the solution, particularly the malware behind it, is excellent. That's something that really helped us out. It's not just a simple proxy that just blocks the insights of potential threats that come on behind it. They do malware detection and that helps us a lot."
"We were impressed by the solution's mental health function, which can detect if someone needs help. It scans what users are browsing and flags warning signs so we can check to see if they are okay. We've had to use it a couple of times."
"The most valuable feature is the seamless integration across different clouds."
"The most valuable feature of Microsoft Defender for Cloud Apps is that we are primarily using only the Defender for Cloud on the Azure Cloud."
"The integration within the entire Defender suite is highly valuable because it allows for communication between different components and offers pretty decent correlations."
"I would rate it a ten because I have not experienced any stability issues so far with Defender for Cloud Apps."
"We have become more aware of what services our users are using, how often they are using them, and what data is being sent out of the organization and to which services. So, it is really a lot about visibility and helping us make decisions based on that. It drives some of our policy decisions for adding extra security controls."
"The most valuable feature is its policy implementation."
"The most valuable feature is the alerting system."
"In Microsoft Defender for Cloud Apps, there is an option to enable files. Once you enable that, it will give you all the files in your organization and where they are located in the cloud... That feature is very useful for investigation purposes."
"The most valuable feature of Zscaler Private Access is we do not have to connect to a VPN, it is seamless. It is more convenient for us because we use one agent to cover the internet and VPN access."
"The policies are very easy to implement."
"The scalability is pretty good."
"From a cost perspective, I would say fair market value, and then from an efficiency perspective, I notice a very good user experience, which is easy to use with Zscaler Zero Trust Exchange Platform."
"We don't need to connect anymore. It is automatically connected when you log on in Windows."
"You can close your data protection gaps with Zscaler. You can quickly find all the classified, sensitive data across the cloud."
"I find all Zscaler Private Access features valuable because each replaces flawed technologies, such as EPAs being replacements for VPN and PR as a replacement for PAM, so I can't mention only one valuable feature. Overall, Zscaler Private Access is a good solution."
"Has a good zero trust feature."
 

Cons

"Our biggest problem with their service was it did not recognize the device and filtering did not always work correctly."
"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."
"I am currently doing a PoC of the zero trust aspect of it. Compared to other similar solutions, it is hard to get around each feature. It takes a while to get used to it."
"Iboss is growing so fast that it is often hard for them to keep up with the challenges."
"The reporting feature needs improvement."
"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."
"One thing I would like to see differently with their Zero Trust platform is that some of the AI aspects related to high-risk activities have more false positives."
"For zero trust implementation, we encountered complexity issues, especially with a large infrastructure company ExxonMobil."
"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."
"There are some features, such as user navigation content filtering, that are disabled by default, and it probably makes sense to enable them by default."
"The areas of Microsoft Defender for Cloud Apps that need improvement are related to IAM, as they do not provide much support for local users."
"There could be more granular roles that are out of the box included in the product."
"The technical support team has room for improvement."
"We would like to get more information from the endpoint. I don't get enough detailed information right now on why something failed. There is not enough visibility."
"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."
"I believe it's only set to be integrated with Microsoft Defender for identity and identity protection. I would like to see it available for use with something like Office 365 Defender. I don't think it's integrated with that yet."
"The area that requires improvement is their support. The current support is lacking."
"We often face performance and latency issues with Zscaler SASE."
"They should work on a replica account. There could be alerts and replica files sent to the DLP team during data collection."
"Zscaler CASB should include integrations with other SaaS applications."
"The product must allow users to check logs for an entire year in the local console."
"The customers would benefit from more robust documentation and conversations around configurations, as it is slightly complex."
"It has massive room for improvement. The Zscaler product itself is okay, but it doesn't give enough granularity for us as an organization to stipulate rules or processes, especially for data-driven services. For instance, we can stick on SSL inspection, but it's just a click box. It doesn't allow us to go any further into the detail of the SSL inspection. We also can't pull it out without having an additional logging server. It just doesn't give us enough granularity. They should give us more control over the interfaces because it is all backend. They weren't very open to discussing their backend architecture with us in terms of their own data centers. They can maybe a little bit more open about what components are there and how the backend infrastructure works alongside Zscaler. Its licensing can be better. Some of the additional licensing costs are quite high, and they should have certain features ready and available as a baseline rather than having to purchase additional licenses for it. Their support should also be improved. I initially had a consultant from Zscaler for its deployment, but the support that I had throughout the deployment of the project wasn't the best."
"The pre-defined dictionaries could be improved."
 

Pricing and Cost Advice

"It is probably in line with other solutions, but I do not deal with the financial side."
"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."
"The overall pricing for iboss is very competitive and transparent."
"It is expensive compared to one of its competitors."
"We have not priced the solution recently, but they were competitive with other vendors in the past."
"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 a little bit expensive. When you want to have the complete package with Office 365, Defender, and everything else, it is expensive."
"Its pricing is on the higher side. Its price is definitely very high for a small-scale company. As an enterprise client, we do get benefits from Microsoft. We get a discounted price because of the number of users we have in our company. We have a premier package, and with that, we do get a lot of discounts. There are no additional costs. It only comes in the top-tier packages. Generally, the top-tier license is the best license that you can get for your organization. If you want, you can buy it separately, but that's not a good idea."
"Our clients normally use the Microsoft E1 licensing, which is renewed yearly."
"It has fair pricing. You pay for what you get. As far as I know, there are no costs in addition to the standard licensing fee."
"We utilize the Microsoft E5 licensing, which encompasses the entire Microsoft suite; however, it is costly."
"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."
"The cost could be improved when you need to pay for anything. For example, refreshing files takes time to load, though it may be my Internet. To improve the refresh time, Microsoft says that we need to pay for a Premium license, and I don't like paying for things that help make a solution better."
"The pricing is quite high, especially when it comes to the gateway."
"As per industry leads, Zscaler CASB is an expensive solution."
"It is an auto-renewal subscription service."
"The technical support is good."
"Zscaler CASB is an expensive solution."
"The cost is expensive. It depends on the number of users."
"Zscaler Cloud DLP is moderately priced. We pay around 2 million rupees per year."
"There is definitely an ROI."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Computer Software Company
10%
Manufacturing Company
9%
Comms Service Provider
6%
Financial Services Firm
11%
Computer Software Company
11%
Manufacturing Company
8%
Government
7%
Financial Services Firm
13%
Computer Software Company
11%
Manufacturing Company
10%
Insurance Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise6
Large Enterprise5
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise10
Large Enterprise19
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise12
Large Enterprise42
 

Questions from the Community

What needs improvement with iboss?
For zero trust implementation, we encountered complexity issues, especially with a large infrastructure company Exxon...
What is your primary use case for iboss?
Previously when I used iboss, we did the POC for iboss for ExxonMobil. Four or five people wanted to move from our ol...
What is your experience regarding pricing and costs for iboss?
Regarding pricing, setup costs, and licensing, iboss is not cheap, and that's my only concern. There are cheaper alte...
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 is the better solution - Prisma Access or Zscaler Private Access?
We looked into Prisma Access before choosing Zscaler Private Access (ZPA). Palo Alto’s Prisma Access is a secure ac...
What do you like most about Zscaler SASE?
The most valuable features of Zscaler Private Access are reliability, scalability, and availability.
What needs improvement with Zscaler SASE?
The solution needs to improve a lot of aspects.
 

Also Known As

iBoss Cloud Platform
MS Cloud App Security, Microsoft Cloud App Security
Zscaler SASE, Zscaler DLP, Zscaler CASB, Zscaler CSPM, Zscaler Browser Isolation, Zscaler Posture Control
 

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.
Siemens, AutoNation, GE, NOV
Find out what your peers are saying about Microsoft Defender for Cloud Apps vs. Zscaler Zero Trust Exchange Platform and other solutions. Updated: December 2025.
881,665 professionals have used our research since 2012.