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

Microsoft and Zscaler are both solutions in the Cloud Access Security Brokers (CASB) category. Microsoft is ranked #4 with an average rating of 8.4, while Zscaler is ranked #5 with an average rating of 8.6. Microsoft holds a 8.8% mindshare in CASB, compared to Zscaler’s 10.0% mindshare. Additionally, 100% of Microsoft users are willing to recommend the solution, compared to 98% of Zscaler users who would recommend it.

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Executive SummaryUpdated on Jul 27, 2025

Microsoft Defender for Cloud Apps and Zscaler Zero Trust Exchange Platform are two leading solutions in the cloud security and zero trust markets. Each product has distinct strengths, with Microsoft Defender being more seamless in integration with the Microsoft ecosystem, while Zscaler offers robust VPN-like connectivity.

Features: Microsoft Defender for Cloud Apps offers extensive integration with Microsoft's ecosystem, ease of management, and detailed security posture views. It excels in seamless integration, threat detection, and comprehensive reporting. Zscaler Zero Trust Exchange Platform stands out with VPN-like connectivity, data monitoring, and inspection features. It's noted for ease of deployment in cloud environments and robust private access capabilities.

Room for Improvement: Microsoft Defender for Cloud Apps needs better integration with Apple products, streamlined reporting, and faster response to alerts for a lighter, more user-friendly experience. Zscaler Zero Trust Exchange Platform could enhance SCMP network layers, reduce latency, and refine licensing costs. Both products should optimize pricing models and improve integration across multiple ecosystems.

Ease of Deployment and Customer Service: Microsoft Defender for Cloud Apps is tailored for Microsoft-centric organizations with strong cloud integration but has support consistency issues, effective only with Premier tiers. Zscaler demonstrates high scalability and seamless cloud-on-premises deployment but faces latency challenges in larger environments. Customer service is satisfactory for both, although Microsoft's efficiency often requires escalation.

Pricing and ROI: Microsoft Defender for Cloud Apps, bundled with E3 and E5 licenses, offers good value for existing Microsoft users, despite higher costs for small enterprises. Its ROI is seen in integration and enhanced security features. Zscaler is perceived as expensive but offers competitive user-based pricing with ROI through secure connectivity and protective features, appealing to diverse IT setups.

To learn more, read our detailed Microsoft Defender for Cloud Apps vs. Zscaler Zero Trust Exchange Platform Report (Updated: September 2025).

Buyer's Guide

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

September 2025

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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

Mindshare comparison

As of October 2025, in the Cloud Access Security Brokers (CASB) category, the mindshare of iboss is 2.3%, up from 1.6% compared to the previous year. The mindshare of Microsoft Defender for Cloud Apps is 8.8%, down from 11.5% compared to the previous year. The mindshare of Zscaler Zero Trust Exchange Platform is 10.0%, down from 12.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Cloud Access Security Brokers (CASB) Market Share Distribution
Product	Market Share (%)
Microsoft Defender for Cloud Apps	8.8%
Zscaler Zero Trust Exchange Platform	10.0%
iboss	2.3%
Other	78.9%

Cloud Access Security Brokers (CASB)

Featured Reviews

Matt Crockford

Head of Cybersecurity at SES Water

It's easy to roll out, and their understanding of our business made it seamless

One aspect we value about iboss is its simplicity. Their customer service is brilliant, and they are super responsive and knowledgeable. It's easy to roll out, and their understanding of our business made it seamless. 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 user interface is highly intuitive. Our IT team picked it up with minimal training. It's arranged so that it's easy to find where things are. Another advantage is the single pane of glass console, which gives you visibility into what's happening. We're not fully there yet because we haven't implemented zero trust, but we're excited about the possibilities from the demos we've seen. We launched a POC of iboss' ChatGPT Risk Protection feature two weeks ago. AI is a great tool, but you need to be careful what you put into it. My biggest fear is employees inputting sensitive corporate information or customer PII data into one of these chatbots. I was impressed by our trial of the feature. It's exactly what we wanted. Now, when a user goes to ChatGPT, there's a banner warning them not to share information, and we can block conversations containing customer data like bank details and email addresses. I don't want to stop people from using it, but we need visibility. We've only tried it on a test group of 15 people. You can configure it to look for specific keywords or integrate it with your DLP policy if you have that configured

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Abdulrahman Muhammadi

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.

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Sumit Bhanwala

architect at Tata Consultancy

Cloud-based platform simplifies device and data center management

I find it to be good. The solution is cloud-based with the latest inspection engines, which I find to be amazing. We are less dependent on data centers and device management, which reduces our efforts significantly. It improves our device management, data center management, and updating devices. We need fewer engineers for this management, and it reduces time and efforts for data center management, device upgrades, and IT support.

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Quotes from Members

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

Pros

"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."

"iboss is among the few products providing inline filtering where no application is needed on the device. It operates on the network side and is not device-based. This feature was one of the main reasons why we stayed with them for so long."

"I would rate the technical support of iboss a solid 10 without a shadow of a doubt."

"The console is cloud-based, which is something I really appreciate."

"Our primary use case for this product is DLP,"

"I would definitely recommend iboss for web filtering purposes to other organizations or individuals."

"iboss is among the few products providing inline filtering where no application is needed on the device."

"The solution has massively improved our security posture, giving us full visibility into what our staff does online."

More iboss pros

"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."

"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 product’s most valuable feature is SQL database."

"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."

"If your business requirements are relatively simple, it can get the job done."

"On-demand scanning is the most valuable feature. In addition, it's a fairly fluid product. It syncs back to the cloud and provides metrics. It's pretty intelligent."

"Better logging allows us to find problems and take appropriate steps to lock them out."

"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."

More Microsoft Defender for Cloud Apps pros

"On DLP terms, Zscaler Cloud DLP ensures that data doesn't go outside of the organization. So on the network level, Zscaler does a pretty good job."

"The most valuable feature is its seamless integration capabilities, streamlining the process by eliminating the need for extensive installations."

"Has a good zero trust feature."

"The initial setup is easy."

"The product’s most valuable features are data discovery, activity control, and zero trust exchange."

"The solution is cloud-based with the latest inspection engines, which I find to be amazing."

"The best feature is the ability to establish the connection between your public network and automatically connect to the intranet connection."

"The most valuable features of Zscaler SASE include web filtering, application control, and the private access configuration."

More Zscaler Zero Trust Exchange Platform pros

Cons

"To scale up, a new iboss Node Blade Chassis must be purchased."

"The reporting feature needs improvement."

"Our biggest problem with their service was it did not recognize the device and filtering did not always work correctly."

"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."

"The area I would like to see improvement in is the ability with in the reporter to navigate directly to the content the user is traversing. It is kind of there, but it's not perfect. Quite frequently, I receive links that lead me to pages with error messages."

"If they could implement an extra security layer preventing access to iboss from the open internet, it would be great."

"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."

"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."

More iboss cons

"A significant improvement I would like to see is the integration into a single pane of glass, which would allow me to view everything in one place rather than having to switch between different areas."

"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."

"Licensing cost is a significant concern. With Defender Plan 1, Microsoft Defender for Cloud Apps comes with a pay-per-use model."

"In the future, I would like to see more plug-and-play capabilities that use AI to tell you what needs to be done. It would be helpful if it scanned our devices and made security suggestions, on a configuration basis."

"There are certain areas where the product could improve, such as some functionalities that did not work as expected."

"The integration with macOS operating systems needs to be better."

"Currently, reporting is not very straightforward and it needs to be enhanced. Specific reports are not included and you need to run a query, drill down, and then export it and share it. I would love to have reports with more fine-tuning or granularity, and more predefined reports."

"They should continue integration with all other Microsoft security-related products. The integration with all the other products is still ongoing."

More Microsoft Defender for Cloud Apps cons

"Zscaler Private Access needs to improve its collaboration with applications without compromising security."

"The granularity in blocking is not sufficient, as new domains are automatically blocked for 30 days without further information."

"SCMP support would be one of the biggest improvements in my opinion. More speed improvements are also required."

"The pre-defined dictionaries could be improved."

"Zscaler Private Access's reporting is poor. We should have more insight into the reports regarding what is blocked and allowed."

"You won't find anything that can help you with the configuration part and other areas related to the product if you search for proper or exact details of Zscaler Cloud DLP online in very easy language."

"We'd like to have two-factor authentication that is quite simple."

"The product must allow users to check logs for an entire year in the local console."

More Zscaler Zero Trust Exchange Platform cons

Pricing and Cost Advice

"It is probably in line with other solutions, but I do not deal with the financial side."

"The overall pricing for iboss is very competitive and transparent."

"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 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 utilize the Microsoft E5 licensing, which encompasses the entire Microsoft suite; however, it is costly."

"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."

"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."

"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."

"Microsoft offers bundle discounts and a pay-as-you-go option."

"We have an educational licensing agreement. It's a customer agreement for multiple years."

"The E5 license offers everything bundled. People are moving to Microsoft because you buy one license and it gives you everything."

"The pricing is fair."

More Microsoft Defender for Cloud Apps pricing and cost advice

"It is an auto-renewal subscription service."

"Zscaler DLP solution is expensive, with a fixed pricing structure that is billed annually and monthly. There are no additional costs for licenses."

"Zscaler Private Access is extremely expensive."

"As per industry leads, Zscaler CASB is an expensive solution."

"The cost is expensive. It depends on the number of users."

"My company is a Zscaler Private Access partner, so the customers pay for the license fees."

"Zscaler SASE software is quite expensive compared to other solutions"

"There is definitely an ROI."

More Zscaler Zero Trust Exchange Platform pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

11%

Computer Software Company

11%

Manufacturing Company

Comms Service Provider

Computer Software Company

12%

Financial Services Firm

10%

Manufacturing Company

Government

Computer Software Company

13%

Financial Services Firm

13%

Manufacturing Company

Insurance Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	6
Midsize Enterprise	6
Large Enterprise	5

By reviewers
Company Size	Count
Small Business	13
Midsize Enterprise	10
Large Enterprise	19

By reviewers
Company Size	Count
Small Business	16
Midsize Enterprise	11
Large Enterprise	41

Questions from the Community

What needs improvement with iboss?

For zero trust implementation, we encountered complexity issues, especially with a large infrastructure company Exxon...

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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...

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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...

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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...

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What do you like most about Microsoft Cloud App Security?

It does a great job of monitoring and maintaining a security baseline. For us, that is a key element. The notificatio...

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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...

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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...

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What do you like most about Zscaler SASE?

The most valuable features of Zscaler Private Access are reliability, scalability, and availability.

See all answers

What needs improvement with Zscaler SASE?

The solution needs to improve a lot of aspects.

See all answers

Comparisons

Netskope vs iboss

Compared 14% of the time

Zscaler Internet Access vs iboss

Compared 13% of the time

Prisma Access by Palo Alto Networks vs iboss

Compared 13% of the time

Cisco Umbrella vs iboss

Compared 13% of the time

Lightspeed Filter vs iboss

Compared 4% of the time

More iboss Competitors

Zscaler Internet Access vs Microsoft Defender for Cloud Apps

Compared 17% of the time

Cisco Umbrella vs Microsoft Defender for Cloud Apps

Compared 15% of the time

Netskope vs Microsoft Defender for Cloud Apps

Compared 12% of the time

Prisma Access by Palo Alto Networks vs Microsoft Defender for Cloud Apps

Compared 6% of the time

Cato SASE Cloud Platform vs Microsoft Defender for Cloud Apps

Compared 2% of the time

More Microsoft Defender for Cloud Apps Competitors

Cato SASE Cloud Platform vs Zscaler Zero Trust Exchange Platform

Compared 11% of the time

Microsoft Purview Data Loss Prevention vs Zscaler Zero Trust Exchange Platform

Compared 8% of the time

Prisma Access by Palo Alto Networks vs Zscaler Zero Trust Exchange Platform

Compared 7% of the time

FortiSASE vs Zscaler Zero Trust Exchange Platform

Compared 6% of the time

Netskope Private Access vs Zscaler Zero Trust Exchange Platform

Compared 4% of the time

More Zscaler Zero Trust Exchange Platform Competitors

Product Reports

Buyer's Guide

iboss

October 2025

Download iboss product report

Buyer's Guide

Microsoft Defender for Cloud Apps

October 2025

Microsoft Defender for Cloud Apps report

Download Microsoft Defender for Cloud Apps product report

Buyer's Guide

Zscaler Zero Trust Exchange Platform

October 2025

Zscaler Zero Trust Exchange Platform report

Download Zscaler Zero Trust Exchange Platform product report

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

Iboss offers a comprehensive cloud-based security platform valued for its scalability and autonomous features, ensuring robust security with easy deployment and management capabilities.

Renowned for its robust security architecture, Iboss integrates seamlessly within diverse networks, delivering efficient granular filtering and advanced content categorization. Its single pane of glass console provides ease of management, allowing rapid scalability suitable for rapidly deploying environments. Operates in BYOD setups due to inline filtering without device installation. Integration with cloud-based applications enhances user control, and features like SASE, SSL inspection, and ChatGPT risk protection stand as highlights. Despite its strengths, users have pointed out areas for enhancement like direct navigation in reports, SSL decryption, and better cloud integration while having room to improve data loss prevention.

What are the most important features of Iboss?

Scalability: Supports rapid deployment across diverse networks.
SASE: A consolidated approach to secure access.
SSL Inspection: Ensures safe data transmission.
Granular Filtering: Detailed control over accessible content.
Single Pane Management: Unifies control through a centralized console.

What benefits should users consider in reviews?

Cost-effectiveness: Offers competitive pricing with robust features.
Autonomous Operation: Reduces management overhead.
Responsive Support: Provides assistance when needed.
Flexible Deployment: Available for both cloud and on-premises environments.

The usage of Iboss spans educational institutions, specifically K-12, to enforce internet policies, protect data, and support remote work environments. It provides web filtering and security frameworks to ensure safe browsing. Its platform-as-a-service model offers flexibility for both cloud-based and on-premises requirements, integrating seamlessly to deliver enhanced security features suitable for various deployment needs including zero trust, CASB, and network security for work-from-home setups.

iboss

Microsoft Defender for Cloud Apps is a comprehensive security solution that provides protection for cloud-based applications and services. It offers real-time threat detection and response, as well as advanced analytics and reporting capabilities. With Defender for Cloud Apps, organizations can ensure the security of their cloud environments and safeguard against cyber threats. Whether you're running SaaS applications, IaaS workloads, or PaaS services, Microsoft Defender for Cloud Apps can help you secure your cloud environment and protect your business from cyber threats.

Microsoft Defender for Cloud Apps Benefits:

Provides comprehensive security for cloud applications
Integrates with other Microsoft security tools
Easy to use and deploy
Provides real-time threat detection and response
Strong protection against phishing attacks and other common threats
Highly customizable to meet specific needs of different organizations

Microsoft Defender for Cloud Apps Use Cases:

Governance, authentication, security, and compliance.
Detects shadow IT and anomalous user behavior
Controls access to applications
Provides auditing and filtering setups
Used for end-user compute devices, file monitoring, user investigation, and activity
Used for data governance, threat detection, and getting visibility over cloud applications
Used to identify information about applications beyond organizational boundaries
Prevent exfiltration and data filtration of corporate data
Used to deal with spam emails and detect shadow IT

Reviews from Real Users

Ram-Krish, Cloud Security & Governance at a financial services firm, says that Microsoft Defender for Cloud Apps "Integrates well and helps us in protecting sensitive information, but takes time to scan and apply the policies and cannot detect everything we need".

PeerSpot user, Senior Cloud & Security Consultant at a tech services, writes that Microsoft Defender for Cloud Apps "Great for monitoring user activity and protecting data while integrating well with other applications".

Simon Burgess,Infrastructure Engineer at SBITSC, states that Microsoft Defender for Cloud Apps is "A fluid, intelligent product for great visibility, centralized management, and increased uptime".

Microsoft

Zscaler Zero Trust Exchange enhances security with seamless cloud-based connectivity and VPN-less operation, offering integration with multiple identity providers and advanced security features, suitable for remote work environments.

Zscaler Zero Trust Exchange provides secure, adaptive connectivity without traditional VPNs, allowing organizations to replace legacy systems and bolster remote work security. The platform offers cloud-based protection, single sign-on, dynamic URL categorization, and scalable solutions. While advanced security features like DLP and threat protection enhance data protection, users may face issues with speed, connectivity, and some customization options. Integration challenges, latency due to multi-tenant hosting, reporting delays, and licensing costs require consideration. It supports secure internet access and private application security, ensuring traffic control and data compliance.

What are the key features of Zscaler Zero Trust Exchange?

VPN-less Connectivity: Enables secure remote access without traditional VPNs.
Cloud-based Security: Offers scalable protection utilizing cloud infrastructure.
Single Sign-On: Integrates with multiple identity providers for streamlined access.
Dynamic URL Categorization: Provides real-time URL filtering to enhance security.
Advanced Threat Protection: Detects and mitigates sophisticated threats effectively.
Customizable Policies: Allows tailored security protocols to fit unique requirements.
Comprehensive DLP: Protects sensitive data through robust data loss prevention.
Integration Capabilities: Connects seamlessly with cloud services and applications.

What are the benefits of using Zscaler Zero Trust Exchange?

Enhanced Security: Delivers consistent protection regardless of user location.
Improved Compliance: Ensures adherence to data protection regulations.
Streamlined Access: Simplifies connectivity to private and cloud applications.
Scalability: Supports expanding organizational demands with cloud scalability.
Real-time Visibility: Provides instant insights into security incidents and network traffic.

Zscaler Zero Trust Exchange is deployed across industries to secure remote access and enforce zero trust principles. Organizations in finance, healthcare, and technology sectors utilize it for secure internet access and visibility into cloud applications, enhancing performance and compliance in dynamic environments.

Zscaler

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

Buyer's Guide

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

September 2025

Free Report: Microsoft Defender for Cloud Apps vs. Zscaler Zero Trust Exchange Platform

Find out what your peers are saying about Microsoft Defender for Cloud Apps vs. Zscaler Zero Trust Exchange Platform and other solutions. Updated: September 2025.

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