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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
65
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.
TarunKumar5 - PeerSpot reviewer
Lead Engineer at FIS Global
Elevating security with cost-effective features and robust integration
The platform offers advanced threat protection features and embedded AI/ML capabilities, making it more proactive in blocking threats. We can create different types of controls such as access controls, file type controls, and cloud app controls to manage user access. The solution is beneficial for remote work environments by providing extra security features that VDI cannot provide. Data loss prevention features are available, particularly network data loss prevention. We can create various regex and other rules in Zscaler DLP. The platform saves workforce hours and integrates with various tools and technologies, which has increased our security posture. We can integrate with SIEM, our AV platform, XDR, and EDR.

Quotes from Members

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

Pros

"Because of iboss, I did not have to assign web filtering tasks to my techs on a daily basis."
"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."
"Our primary use case for this product is DLP,"
"Technical support is pretty sharp and very responsive."
"Iboss is a solution that prevents advanced persistent threats, and has a zero tolerance for attacks."
"iboss is easy to use despite its complexity. Multiple engineers manage it, but it's significantly more straightforward to administer than traditional VPNs and web proxies."
"It was a very easy product to install. It can be deployed very fast."
"I would rate the technical support of iboss a solid 10 without a shadow of a doubt."
"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 feature of Microsoft Defender for Cloud Apps is that we are primarily using only the Defender for Cloud on the Azure Cloud."
"The feature that helps us in detecting the sensitive information being shared has been very useful. In addition, the feature that allows MCAS to apply policies with SharePoint, Teams, and OneDrive is being used predominantly."
"The ability to prevent users from using certain applications is one of the most valuable features. It doesn't require any configuration for implementation from the client perspective. It just works right away and gives you the information you need."
"I like the alert policies because they are quite robust. It has some built-in templates that we can easily pick up. One of them is the alert for mass downloads, when a particular user is running a massive download on your SharePoint site."
"The raw logs that come directly from Microsoft Defender for Cloud Apps contain all the data I need, and the ability to track activities happening on cloud applications and the alerts provided is an interesting aspect."
"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."
"The favorite feature of Microsoft Defender for Cloud Apps is the categorical blocking capability, which appears to be fed from Microsoft Security Intelligence feeds that seem to be better than other solutions and allows for dynamic configuration, cutting down on potential issues from manually managing block lists."
"The scalability is pretty good."
"The most valuable features of Zscaler SASE include web filtering, application control, and the private access configuration."
"Zscaler CASB's latency and architecture are excellent."
"The in-line DLP feature is one of the most vital features"
"The best feature is the ability to establish the connection between your public network and automatically connect to the intranet connection."
"The most valuable feature of Zscaler Private Access is the categorization of the dynamic URLs which keeps the customer's environment protected. The threats and the malware are correctly categorized."
"Zscaler Cloud DLP provides you with basic DLP features that you get out of the box such as keywords, regular expressions, and data identifiers, for example, your social security numbers, and credit card numbers, with everything built into the product, so you can directly use those features within the policies. You don't need to create it from scratch, and to me, this is the biggest benefit of Zscaler Cloud DLP. You have a lot of templates to choose from in the solution, rather than having to create templates from scratch or reinvent templates."
"The user interface of Zscaler Private Access is excellent. With proper knowledge and expertise, one can efficiently handle intricate enterprise environments without feeling overwhelmed. This leads to exceptional productivity for managed service providers. The user experience is remarkably streamlined, enabling the management of even the most complex enterprise setups without any excessive complications."
 

Cons

"Its pricing could be better."
"Sometimes, obviously, there are bugs."
"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."
"Fold that in with the risk intelligence they're getting from all of the different subscriptions they are a part of. Now, these security companies subscribe to things like emerging threats, databases, etc. You can fold all this intelligence to decide what's happening on an endpoint. I would love to see them start moving into that space. That would compete directly with Microsoft. Maybe that's why they haven't. Having that ability native within the solution would be great. The other area in which I would love to see improvement is more detailed descriptions of why they block websites."
"If they could implement an extra security layer preventing access to iboss from the open internet, it would be great."
"The solution could be stronger on the integration side and offer more cloud applications like G Suite or Oracle."
"Sometimes when you call in support, you get someone who is just following a sheet. It feels like a runaround. You feel that you are running into that support wall."
"I'd like to see them accelerate development on the security side, particularly around data loss prevention."
"Sometimes the support is actually lacking."
"We are having trouble with our continuous reporting configuration and struggling with configuring the collector properly with our log parsing. We've also faced difficulties getting support for this issue. It's taken us months to figure this out after going through a couple of different support channels."
"The product is very good so far, however, it would be better if it could include more up-to-date threat protection."
"Defender could integrate better with multi-cloud and hybrid environments. It requires some additional configuration to ingest data from non-Azure environments and integrate it with Sentinel."
"We sometimes get errors when we create policies, which is somewhat annoying because some policies stop working due to misconfigurations. We find this challenging because it limits our options for troubleshooting an issue."
"They should continue integration with all other Microsoft security-related products. The integration with all the other products is still ongoing."
"The interface needs to be more user-friendly."
"I would prefer to have filtering options incorporated within the policies, enabling the solution to perform tasks beyond mere blocking or allowing."
"We'd like to have two-factor authentication that is quite simple."
"Users report application access or latency issues with Zscaler Private Access."
"The area that requires improvement is their support. The current support is lacking."
"It would be better if the Zscaler Private Access team made it easier for people to find subscriptions on the portal, mainly information on what my customers subscribed to or the type of licenses purchased."
"Conflicts arise if you do not have the same management teams on the product."
"There could be more DLP-related features. Additionally, there needs to be flexibility for integrating ISP features."
"More on-prem infrastructure is required when Zscaler Private Access is to be implemented as a single point of entry."
"The granularity in blocking is not sufficient, as new domains are automatically blocked for 30 days without further information."
 

Pricing and Cost Advice

"The overall pricing for iboss is very competitive and transparent."
"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."
"We have not priced the solution recently, but they were competitive with other vendors in the past."
"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 probably in line with other solutions, but I do not deal with the financial side."
"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 product's pricing seems fair."
"The E5 license offers everything bundled. People are moving to Microsoft because you buy one license and it gives you everything."
"The price could be better and should be reconsidered."
"Microsoft offers bundle discounts and a pay-as-you-go option."
"We are an MST and we do not pay for the solution. However, the price of the solution could be better."
"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."
"It is a little bit expensive. When you want to have the complete package with Office 365, Defender, and everything else, it is expensive."
"It has been relatively reasonable for what it does. Some of the additional license costs based on the advanced next-generation firewall functions are quite high, and they should have certain features ready and available as a baseline rather than having to purchase additional licenses for it. Overall, the cost seems reasonable."
"Zscaler SASE software is quite expensive compared to other solutions"
"In the long run, cloud services are not inherently costly."
"Zscaler DLP solution is expensive, with a fixed pricing structure that is billed annually and monthly. There are no additional costs for licenses."
"As per industry leads, Zscaler CASB is an expensive solution."
"Zscaler Cloud DLP is moderately priced. We pay around 2 million rupees per year."
"The product is a little more expensive than other tools."
"It's expensive currently. But when purchasing for a large number of users, there's room to negotiate. It's really up to the procurement team."
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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.
881,515 professionals have used our research since 2012.