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 8.5, while Zscaler is ranked #9 with an average rating of 8.5. Microsoft holds a 6.9% mindshare in CASB, compared to Zscaler’s 8.7% 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 Nov 2, 2025

Microsoft Defender for Cloud Apps and Zscaler Zero Trust Exchange Platform are both strong contenders in the cloud security market, each offering unique strengths tailored to different organizational needs. Microsoft Defender for Cloud Apps holds a slight advantage with its robust integration within the Microsoft ecosystem, making it ideal for businesses already invested in Microsoft products. Meanwhile, Zscaler excels in a cloud-centric approach with its zero-trust private access, beneficial for remote and hybrid environments.

Features: Microsoft Defender for Cloud Apps provides seamless integration with Microsoft products, offering identity and posture management alongside advanced threat detection. It grants businesses comprehensive visibility, particularly beneficial for those using SharePoint, Teams, and OneDrive. Zscaler Zero Trust Exchange Platform is notable for its zero-trust model, quick deployment, and cloud-centric architecture, offering integrated security features like CASB and DLP, designed for protecting diverse environments.

Room for Improvement: Microsoft Defender for Cloud Apps could improve its Apple product integration and overall ease of use. Enhancements in reporting capabilities and better support for non-Microsoft ecosystems are also needed. Zscaler, on the other hand, could benefit from more straightforward configurations, improved network visibility, reduced latency, and better support and documentation for diverse environments.

Ease of Deployment and Customer Service: Both platforms support deployment across hybrid and public cloud environments. Microsoft Defender for Cloud Apps is known for its seamless integration with the Microsoft suite, though it experiences mixed reviews in customer service. Zscaler's complex deployment process and high costs can be challenging, leading to mixed support service feedback depending on the service agreement.

Pricing and ROI: Microsoft Defender for Cloud Apps is generally part of bundled Microsoft packages, offering cost efficiencies for existing Microsoft users but is seen as costly when purchased alone. Zscaler Zero Trust Exchange Platform is often criticized for its high costs, especially concerning gateway pricing but provides strong ROI through an enhanced security posture. The evaluation of specific organizational needs is critical to assess cost-effectiveness.

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

Buyer's Guide

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

December 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 January 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 6.9%, down from 10.2% compared to the previous year. The mindshare of Zscaler Zero Trust Exchange Platform is 8.7%, down from 10.4% 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	6.9%
iboss	2.5%
Zscaler Zero Trust Exchange Platform	8.7%
Other	81.9%

Cloud Access Security Brokers (CASB)

Featured Reviews

reviewer2701851

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.

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Frank Van Der Spek

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.

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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.

Read full review

Quotes from Members

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

Pros

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

"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."

"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,"

"Its initial setup was straightforward."

"Technical support is pretty sharp and very responsive."

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

More iboss pros

"I would rate it a ten because I have not experienced any stability issues so far with Defender for Cloud Apps."

"I like the web GUI/the management interface. I also like the security of Microsoft. As compared to other manufacturers, it's less complex and easy to understand and work with."

"All of the features are valuable because all of the features are related."

"The solution does not affect a user's workflow."

"Threat detection is its key feature, and that's why we use this tool. It gives an alert if a PC is attacked or there is any kind of anomaly, such as there is a spike in sending emails or we see an unauthorized website being accessed. So, it keeps us on our toes. We get to know that there is something wrong, and we can isolate the user and find any issues with it. So, threat detection is very robust in this tool."

"The most effective features for data protection are data loss prevention (DLP) and data classification."

"The ability to sanction unsanctioned apps using Secure Score benchmarking, included in Cloud, is also beneficial."

"The most valuable feature is the ease of management. It's important."

More Microsoft Defender for Cloud Apps pros

"The most valuable features are the File Type Control and SSL bypass policies. We"

"The scalability of the solution is great."

"The solution offers a simplified network infrastructure and security functions and it enables secure remote access for the users"

"The UI is easy to use."

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

"The Live Logs are a cool feature. We can directly identify issues and divert user traffic."

"Users get direct secure access to applications over the internet."

"With SASE, we have a single platform that covers multiple task services with which we need to control access. All the features are equally valuable."

More Zscaler Zero Trust Exchange Platform pros

Cons

"The solution could be stronger on the integration side and offer more cloud applications like G Suite or Oracle."

"The dashboards for local use could be better."

"File integrity monitoring would be very advantageous as an additional feature."

"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."

"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."

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

"The reporting feature needs improvement. It doesn't give you the expected results. It is quite difficult to get the specific reports needed, and it is not as intuitive as the rest of the platform."

More iboss cons

"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."

"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 documentation could be improved as it is not updated immediately when Microsoft makes changes. Users must wait a few weeks for the changes to be reflected in the documentation."

"The response time could be better. It will be helpful if the alerts are even more proactive and we can see more data. Currently, the data is a little bit weak. It is not complete. I can't just see it and completely know which user or which device it is. It takes some effort and time on my part to investigate and isolate a user. It would be great if it is more user-friendly or easy for people to understand."

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

"The product is very good so far, however, it would be better if it could include more up-to-date threat protection."

"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."

"Defender for Cloud Apps could come with more configured policies out of the box. Also, integration could be easier. Integration is moderately difficult because Microsoft hasn't developed a solution that unifies device onboarding and management. You have to use Intune to manage devices and Defender for Endpoint to enforce policies. They need to fix their integration, but I believe they will straighten it out by the end of the year."

More Microsoft Defender for Cloud Apps cons

"Users report application access or latency issues with Zscaler Private Access."

"We have issues with the tool's maintenance and networking. It should be able to work in offline mode as well."

"The tool must provide IP-blocking features."

"Setup is a bit complex because there are many steps that need to be taken before onboarding and activating the solution."

"The solution's granularity should be improved because it has limited granular options to control, visible, allow, block, delay, and receive."

"There could be additional ways to define proximity. Additionally, they should provide some exclusion options for specific policies and an ability to control the DLP engine."

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

"Conflicts arise if you do not have the same management teams on the product."

More Zscaler Zero Trust Exchange Platform cons

Pricing and Cost Advice

"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 expensive compared to one of its competitors."

"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."

"This product is not expensive."

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

"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."

"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."

"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."

"It is a little bit expensive. When you want to have the complete package with Office 365, Defender, and everything else, it is expensive."

"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."

"Our clients normally use the Microsoft E1 licensing, which is renewed yearly."

More Microsoft Defender for Cloud Apps pricing and cost advice

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

"The pricing is expensive and on the higher end. Honestly, in my opinion, it is not worth the price."

"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."

"The solution is expensive."

"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"

"Zscaler Private Access is extremely expensive."

"Pricing for Zscaler Private Access is moderate. It's acceptable, though I can't give you the exact price currently. It's not too expensive, and on a scale of one to five, I would rate it a four out of five in terms of pricing."

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

10%

Manufacturing Company

Comms Service Provider

Financial Services Firm

11%

Computer Software Company

11%

Manufacturing Company

Government

Financial Services Firm

13%

Computer Software Company

11%

Manufacturing Company

10%

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	15
Midsize Enterprise	10
Large Enterprise	19

By reviewers
Company Size	Count
Small Business	16
Midsize Enterprise	12
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...

See all answers

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...

See all answers

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...

See all answers

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 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...

See all answers

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...

See all answers

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 13% of the time

Prisma Access by Palo Alto Networks vs iboss

Compared 10% of the time

Cisco Umbrella vs iboss

Compared 9% of the time

Zscaler Internet Access vs iboss

Compared 9% of the time

Appgate SDP vs iboss

Compared 3% of the time

More iboss Competitors

Zscaler Internet Access vs Microsoft Defender for Cloud Apps

Compared 14% of the time

Cisco Umbrella vs Microsoft Defender for Cloud Apps

Compared 14% of the time

Netskope vs Microsoft Defender for Cloud Apps

Compared 10% of the time

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

Compared 7% of the time

Microsoft Entra ID 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 10% of the time

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

Compared 5% of the time

FortiSASE vs Zscaler Zero Trust Exchange Platform

Compared 5% of the time

Microsoft Purview Data Loss Prevention vs Zscaler Zero Trust Exchange Platform

Compared 5% of the time

Check Point Harmony SASE (formerly Perimeter 81) vs Zscaler Zero Trust Exchange Platform

Compared 4% of the time

More Zscaler Zero Trust Exchange Platform Competitors

Product Reports

Buyer's Guide

iboss

January 2026

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Buyer's Guide

Microsoft Defender for Cloud Apps

January 2026

Microsoft Defender for Cloud Apps report

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Buyer's Guide

Zscaler Zero Trust Exchange Platform

January 2026

Zscaler Zero Trust Exchange Platform report

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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

December 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: December 2025.

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