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Microsoft Defender for Cloud Apps vs Zscaler Internet Access comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jul 27, 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
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), Cloud Access Security Brokers (CASB) (7th), ZTNA as a Service (8th), Secure Access Service Edge (SASE) (8th)
Microsoft Defender for Clou...
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
40
Ranking in other categories
Cloud Access Security Brokers (CASB) (4th), Advanced Threat Protection (ATP) (14th), Microsoft Security Suite (12th)
Zscaler Internet Access
Average Rating
8.4
Reviews Sentiment
6.7
Number of Reviews
57
Ranking in other categories
Secure Web Gateways (SWG) (2nd), Internet Security (2nd)
 

Mindshare comparison

Cloud Access Security Brokers (CASB) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Cloud Apps8.9%
Prisma Access by Palo Alto Networks17.9%
Netskope14.9%
Other58.300000000000004%
Cloud Access Security Brokers (CASB)
Secure Web Gateways (SWG) Market Share Distribution
ProductMarket Share (%)
Zscaler Internet Access14.1%
Cisco Umbrella17.4%
Prisma Access by Palo Alto Networks11.1%
Other57.4%
Secure Web Gateways (SWG)
 

Featured Reviews

Matt Crockford - PeerSpot reviewer
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
Abdulrahman Muhammadi - PeerSpot reviewer
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.
Mohan Janarthanan - PeerSpot reviewer
User access management and threat prevention are enhanced with user-friendly controls
The best features Zscaler Internet Access offers include application control, tenant segregation, and PoP center regions which have low availability zones. The internet access is very successful and bandwidth speed is excellent. It also has application-based control, URL-based control, and SSL inspection capabilities, which are very useful. Additionally, the in-depth CASB segregation is very beneficial to us. One unique feature I found helpful is the tenant level restrictions, which we use to only access our organization's tenant level mail IDs, drives, and specific tenant level access while restricting public access. Zscaler Internet Access has positively impacted our organization as we have noticed substantial outputs and income. It has improved our security environment control and endpoint protection. It prevents numerous web attacks through its AI/ML incorporated capability which identifies malware, threats, and viruses. It has a toggle button to enable features entirely at the tenant level for all users onboarded into Zscaler Internet Access, resulting in much better outcomes.

Quotes from Members

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

Pros

"Technical support is pretty sharp and very responsive."
"iboss has significantly lowered the number of security incidents. It is crazy how much it blocks and how much it is aware of the outside danger."
"Its initial setup was straightforward."
"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."
"Granular setup, which was able to set different levels of filters using the OUs in the AD."
"The iboss system is highly reliable. The false positive rates are small compared to some other systems we've experienced through other partner agencies who use competing solutions."
"Our primary use case for this product is DLP,"
"It was a very easy product to install. It can be deployed very fast."
"The integration within the entire Defender suite is highly valuable because it allows for communication between different components and offers pretty decent correlations."
"Defender helps us control which applications are being used and gain more security insight into remote and hybrid users based on user identity and log in location. You can also integrate Defender for Cloud Apps with Defender for Endpoint to extend its capabilities."
"Defender for Cloud Apps has given us good visibility regarding what we've allowed into our environment until now."
"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."
"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 most effective features for data protection are data loss prevention (DLP) and data classification."
"The most valuable feature of Microsoft Defender for Cloud Apps is to stop shadow IT."
"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 solution’s customer service is good."
"The solution offers a distributed organization to master and to control all of the endpoints."
"​After a proper implementation, the maintenance is very low.​"
"The solution is scalable and stable."
"Zscaler excels in security protection and the cloud is always up-to-date. It does not matter if you are a small or big organisation, you will receive the same security quality."
"The VPN is valuable, as the whole technology is very different from a traditional VPN."
"Zscaler Internet Access's best feature is the granular policy controls."
"Zscaler Internet Access protects using data loss prevention. If you have a CASB exposing your cloud out into the network, then Zscaler Internet Access will go ahead and control that unknown cloud application in the CASB, protecting it. There is also data detection with exact data match. This improves the data coming into your cloud so you are protecting it."
 

Cons

"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."
"Its pricing could be better."
"Sometimes the agent stops working in iboss, and we have to reinstall the agent."
"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."
"If they could implement an extra security layer preventing access to iboss from the open internet, it would be great."
"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."
"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."
"Regarding pricing, setup costs, and licensing, iboss is not cheap, and that's my only concern."
"They need to improve the attack surface reduction (ASR) rules. In the latest version, you can implement ASR rules, which are quite useful, but you have to enable those because if they're not enabled, they flag false positives. In the Defender portal, it logs a block for WMI processes and PowerShell. Apparently, it's because ASR rules are not configured. So, you generally have to enable them to exclude, for example, WMI queries or PowerShell because they have a habit of blocking your security scanners. It's a bit weird that they have to be enabled to be configured, and it's not the other way around."
"The insights could be improved, especially in reporting."
"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..."
"We are having trouble with our continuous reporting configuration and struggling with configuring the collector properly with our log parsing."
"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."
"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."
"Generally, the pricing can always be improved along with the management system."
"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."
"The pricing is an issue. It is expensive if you have all of your users in the same location. It is expensive compared to other firewalls on the market."
"In terms of user experience, it could be better."
"Another thing that I would like to see is if Zscaler could have a separate product for direct access. I looked at a private access solution, but I understand there's a separate product that isn't integrated with this."
"Sometimes, support isn't available."
"Currently, the solution's interface is not that user-friendly."
"They could provide more time for the onboarding the training of an IT person."
"It needs better integration with other applications. It takes a fair amount of regular activity to apply the by-passes because it is very strict in its restrictions and frequently you have to go in and open things up to allow the workforce to work."
"In terms of usage, here in the GCC, it's still growing a growing market, so the combination of DLP, data leak prevention, to a certain extent is fine. But what it requires is user-based access or role-based access. The solution needs to grow into that, which definitely takes time. There's not an easy way to integrate it, when you have a cloud-based solution."
 

Pricing and Cost Advice

"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."
"It is expensive compared to one of its competitors."
"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."
"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 are an MST and we do not pay for the solution. However, the price of the solution could be better."
"Microsoft offers bundle discounts and a pay-as-you-go option."
"This product is not expensive."
"It has pretty good pricing."
"We have an educational licensing agreement. It's a customer agreement for multiple years."
"The pricing is a little bit high but right now, we are okay with it because of the compatibility with Office 365, Teams, and Azure AD."
"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 price could be better and should be reconsidered."
"The solution is a little bit expensive. On a scale of one to five, I would rate it as a three."
"Because it's a cloud solution, we pay on a yearly basis. It is affordable and includes tech support and all features."
"The pricing is fair based on its competitive market."
"The price of Zscaler Internet Access should improve, it is expensive."
"The pricing is an issue. It is expensive compared to other firewalls on the market."
"Zscaler is an expensive solution, but it's worth the price. Their services are unmatched by competitors. Some may come with half the features that Zscaler can offer and be much cheaper. However, they do not have the global coverage that Zscaler has, and they will not provide the same low latencies and the same speeds that Zscaler can."
"The pricing for Zscaler Internet Access could be made cheaper."
"There are multiple bundles: enterprise, business, and transformation. Transformation includes all the features, but recently I've seen a few more line items that are additional costs. Overall, it's expensive."
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
11%
Manufacturing Company
9%
Government
6%
Computer Software Company
13%
Financial Services Firm
10%
Manufacturing Company
9%
Government
7%
Computer Software Company
16%
Manufacturing Company
11%
Financial Services Firm
10%
Government
5%
 

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 Business13
Midsize Enterprise10
Large Enterprise18
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise8
Large Enterprise39
 

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 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...
What is your experience regarding pricing and costs for Microsoft Cloud App Security?
My impression on the pricing, setup costs, and licensing of Microsoft Defender for Cloud Apps is that it's fair. I do...
Which is the better security solution - Cisco Umbrella or Zscaler?
Cisco Umbrella and Zscaler Internet Access are two broad-spectrum Internet security solutions that I have tried. Zs...
Which is better, Zscaler internet access or Netsckope CASB?
We researched Netskope but ultimately chose Zscaler. Netskope is a cloud access security broker that helps identify ...
 

Also Known As

iBoss Cloud Platform
MS Cloud App Security, Microsoft Cloud App Security
ZIA
 

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.
Ulster-Greene ARC, BanRegio, HDFC, Ralcorp Holdings Inc., British American Tobacco, Med America Billing Services Inc., Lanco Group, Aquafil, Telefonica, Swisscom, Brigade Group
Find out what your peers are saying about Palo Alto Networks, Cisco, Netskope and others in Cloud Access Security Brokers (CASB). Updated: August 2025.
867,370 professionals have used our research since 2012.