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CoreOS Clair vs Microsoft Defender for Cloud comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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

Qualys TotalCloud
Sponsored
Ranking in Container Security
8th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
54
Ranking in other categories
Vulnerability Management (5th), Cloud Workload Protection Platforms (CWPP) (7th), Cloud Security Posture Management (CSPM) (6th), SaaS Security Posture Management (SSPM) (2nd), Cloud-Native Application Protection Platforms (CNAPP) (6th)
CoreOS Clair
Ranking in Container Security
39th
Average Rating
8.6
Reviews Sentiment
7.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Microsoft Defender for Cloud
Ranking in Container Security
4th
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
89
Ranking in other categories
Vulnerability Management (11th), Container Management (8th), Cloud Workload Protection Platforms (CWPP) (1st), Cloud Security Posture Management (CSPM) (3rd), Cloud-Native Application Protection Platforms (CNAPP) (5th), Data Security Posture Management (DSPM) (7th), Microsoft Security Suite (7th), Compliance Management (4th), Cloud Detection and Response (CDR) (3rd)
 

Mindshare comparison

As of November 2026, in the Container Security category, the mindshare of Qualys TotalCloud is 1.8%, up from 1.1% compared to the previous year. The mindshare of CoreOS Clair is 0.7%, up from 0.6% compared to the previous year. The mindshare of Microsoft Defender for Cloud is 4.5%, down from 6.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Cloud4.5%
Qualys TotalCloud1.8%
CoreOS Clair0.7%
Other93.0%
Container Security
 

Featured Reviews

reviewer2859021 - PeerSpot reviewer
Sr Security Engineer at a tech vendor with 5,001-10,000 employees
Risk-based triage has transformed container security and now prioritizes high-impact threats
The best features Qualys TotalCloud offers currently include managing cloud infrastructure and container security while facing major challenges such as alert fatigue. Traditional vulnerability scanners flag hundreds of CVEs on short-lived Kubernetes containers, some of which have no internet exposure or are gone before we can even triage them. I leverage Qualys TotalCloud to move beyond static CVSS. I use it to implement runtime exposure, correlation risk reprioritization, and shift-left integration. This notifies developers to fix a base image upstream rather than patching live ephemeral instances. In my work with cloud and container security, the biggest operational hurdle was alert fatigue. I use Qualys to shift left from static CVSS severity to context-aware risk prioritization. I correlated raw vulnerability data with real-time risk factors such as public network exposure, active runtime execution, or overly permissive IAM roles. This allows us to immediately drop the priority of isolated containers and escalate lower-severity CVEs that sit on an exposed, high-risk path. We can map these findings directly back to our CI/CD pipelines so developers can patch the root base images upstream. We have drastically cut down the signal-to-noise ratio, saved a lot of manual hours doing triage work, and ensured engineering effort goes directly towards high-impact risk reduction.
Felipe Giffu - PeerSpot reviewer
Red Hat Solution Architect at Seprol Computadores e Sistemas
An operational system, similar to Linux where you can run your applications inside containers
With CoreOS, you can run your applications inside containers. For example, if you have an application that needs to run on Linux, you can create and install a container. However, it's important to note that you don't install CoreOS inside a container; CoreOS is the host operating system that manages containers. When you mentioned using Nacula as part of your CI/CD pipeline, it means your application is deployed and managed automatically through the CI/CD process. Containers are used to deploy your application within this pipeline, but CoreOS does not run inside these containers. Instead, CoreOS is the base operating system that supports and manages these containers.
RW
Head Of IT at Cirrus Response
Cloud security has cut investigation time and now reveals threats faster but needs simpler oversight
When deploying AI applications, my key security concerns with Microsoft Defender for Cloud are data loss, leakage of data, and guardrails around the actual AI, and I am hoping that this is going to help me put those guardrails in place and identify data exfiltration. Microsoft Defender for Cloud has not helped me manage and secure multi-cloud environments, as we are 100 percent Microsoft and have not really got it in any other environment at all. I am not yet using the unified AI-powered security feature offered by Microsoft Defender for Cloud, but that is coming. I am not yet using the integrated XDR feature of Microsoft Defender for Cloud, but that is coming. I am not yet utilizing the GenAI threat protection features of Microsoft Defender for Cloud. That is also coming and a lot of that will come from learning it here. I have enabled the agentless scanning in my cloud environment with Microsoft Defender for Cloud. Assessing the impact on my workload protection without needing to install agents with Microsoft Defender for Cloud makes it a lot easier, but it also identifies a lot more, which puts more load on me sometimes. I would advise another organization considering Microsoft Defender for Cloud that it is the most logical route to follow if their whole ecosystem is Microsoft. It is easy to implement and it is very self-explanatory when doing it, making sense to just follow the steps as it is too simple, really. I would rate this review a 7.5 out of 10.

Quotes from Members

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

Pros

"TotalCloud offers a comprehensive suite of features, including EDR, XDR, and TrueRisk, providing a centralized platform for managing vulnerabilities and security risks."
"Having everything in a single place to look for it and a single integration into ServiceNow has been the big transformation."
"CSPM is currently the most used feature, and we are enjoying the new feature, FlexScan, which is valuable for Internet-facing VMs."
"The most valuable feature of Qualys TotalCloud is the visibility it provides."
"I would definitely recommend Qualys TotalCloud to other users."
"Once you have your vulnerabilities fixed and your patches pushed out using Qualys TotalCloud, then you are able to eliminate threats and cyber risk."
"Qualys TotalCloud provides a single, prioritized view based on requirements such as identifying the most vulnerable assets and calculating the average time to remediate vulnerabilities."
"The most valuable feature is extensibility."
"CoreOS Clair can be used by organizations of any size."
"CoreOS Clair's best feature is detection accuracy."
"With CoreOS, you can run your applications inside containers. For example, if you have an application that needs to run on Linux, you can create and install a container. However, it's important to note that you don't install CoreOS inside a container; CoreOS is the host operating system that manages containers."
"We can create alerts that trigger if there is any malicious activity happening in the workflow and these alerts can be retrieved using the query language."
"Good compliance policies."
"For organizations who have an on-prem environment and are planning to move to a cloud-based solution, Azure Security Center is definitely one of the best tools that they can use."
"Technical support is helpful."
"The features of Microsoft Defender for Cloud that I like the most are the regulatory compliance capabilities; these features have benefited my organization by improving our overall security posture."
"We are a financial company, so Defender for Cloud helps us create multiple layers to protect assets and ensure a more secure environment."
"The solution's coordinated detection and response across devices and identities is impressive because it is complete."
"I have not experienced any difficulties or issues with the stability of Microsoft Defender for Cloud."
 

Cons

"Qualys TotalCloud's increasing complexity, due to the development and deployment of multiple solutions, is making the GUI difficult to navigate."
"It is already perfect, but they can bring some newer dashboards and customization options for the dashboard. It would be great to be able to include on-prem assets on the dashboard."
"From a downside perspective, the UI is not user-friendly and feels dated compared to other tools like Prisma Cloud."
"I think Qualys TotalCloud needs to improve its handling of zero-day vulnerabilities and supply chain management because modern ransomware attacks not only target prime critical infrastructures but also the supply chain system."
"There is room for improvement in the support."
"The areas in the solution that have room for improvement include the UI/UX design, which should be improved, and they should integrate more artificial intelligence into the product."
"The response part of the Cloud Detection and Response (CDR) module can be improved."
"One thing that could be improved is the user experience and navigation."
"An area for improvement is that CoreOS Clair doesn't provide information about the location of vulnerabilities it detects."
"It can be improved in its support response. They usually take up to seven days to resolve the issue."
"I would like to see better automation when it comes to pushing out security features to the recommendations, and better documentation on the step-by-step procedures for enabling certain features."
"The customer service at Microsoft has room for improvement. The first line of support is not technically adept and often requires engaging higher-level technicians to resolve issues."
"When you work with it, the only problem that we're struggling with is that we have 21 different subscriptions we're trying to apply security to. It's impossible to keep everything organized."
"I've heard there might be issues with scalability for larger enterprises."
"For improvements, I'd like to see more use cases integrated with Microsoft Sentinel and support for multi-cloud environments beyond just Azure."
"So, Azure Security Center fell short from the regulatory compliance point of view, and we had to use one more product."
"Sometimes, it's very difficult to determine when I need Microsoft Defender for Cloud for a special resource group or certain kinds of products. That's not an issue directly with the product, though."
"Microsoft Defender for Cloud can be improved because many of the functions involve multiple places to accomplish the same task, which can make it convoluted."
 

Pricing and Cost Advice

"Qualys TotalCloud is expensive."
"TotalCloud's price is about right where I would expect it to be."
"The cost is high, but it meets our organizational needs."
"I am not sure about the pricing. From what I understand, it is a bit on the higher side, but I do not have the exact numbers."
"Qualys TotalCloud offers competitive pricing given its comprehensive suite of features, including integration, assessment, remediation, and detection capabilities, all within a single platform."
"While Qualys TotalCloud's pricing is currently acceptable, it is becoming increasingly expensive and may soon be considered overpriced."
"Qualys TotalCloud is cost-efficient and was selected for its value compared to other products."
"Qualys TotalCloud offers good pricing that is affordable and competitive with the market. Our partnership also provides us with additional benefits."
"CoreOS Clair is open-source and free of charge."
"Its pricing is a little bit high in terms of Azure Security Center, but the good thing is that we don't need to maintain and deploy it. So, while the pricing is high, it is native to Azure which is why we prefer using this tool."
"I am not involved in this area. However, I believe its price is okay because even small customers are using Azure Security Center. I don't think it is very expensive."
"The licensing is straightforward but can become expensive if you cover everything. You must balance the cost against the importance of what needs covering."
"Pricing is a consideration, but we strive to keep costs low by enabling only necessary services."
"The tool is pretty expensive."
"The price of the solution is good for the features we receive and there is an additional cost for Microsoft premier support. However, some of my potential customers have found it to be expensive and have gone on to choose another solution."
"I rate Microsoft Defender a three out of ten for affordability. The price could be a little lower."
"It is bundled with our enterprise subscription, which makes it easy to go for it. It is available by default, and there is no extra cost for using the standard features."
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Top Industries

By visitors reading reviews
Comms Service Provider
18%
Outsourcing Company
11%
Manufacturing Company
11%
Financial Services Firm
10%
Financial Services Firm
18%
Comms Service Provider
13%
Performing Arts
12%
Government
10%
Financial Services Firm
11%
Computer Software Company
9%
Manufacturing Company
8%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise11
Large Enterprise38
No data available
By reviewers
Company SizeCount
Small Business31
Midsize Enterprise12
Large Enterprise49
 

Questions from the Community

What is your experience regarding pricing and costs for Qualys TotalCloud?
We purchased Qualys TotalCloud for GCP and Azure as well. It is comparatively better than others regarding pricing. T...
What needs improvement with Qualys TotalCloud?
I am unsure about how Qualys TotalCloud can be improved. I do not have anything else to add about the needed improvem...
What is your primary use case for Qualys TotalCloud?
My main use case for Qualys TotalCloud is telemetry, although I am unsure about the specifics. A quick specific examp...
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How is Prisma Cloud vs Azure Security Center for security?
Azure Security Center is very easy to use, integrates well, and gives very good visibility on what is happening acros...
What is your experience regarding pricing and costs for Microsoft Defender for Cloud?
My experience with pricing, setup costs, and licensing was that the license cost was the only consideration. Setup an...
What needs improvement with Microsoft Defender for Cloud?
To improve Microsoft Defender for Cloud, I think pricing-wise, the license price is a little bit higher from an inges...
 

Also Known As

Qualys TotalCloud with FlexScan
No data available
Microsoft Azure Security Center, Azure Security Center, Microsoft ASC, Azure Defender
 

Interactive Demo

Demo not available
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Overview

 

Sample Customers

Information Not Available
eBay, Veritas, Verizon, SalesForce
Microsoft Defender for Cloud is trusted by companies such as ASOS, Vatenfall, SWC Technology Partners, and more.
Find out what your peers are saying about CoreOS Clair vs. Microsoft Defender for Cloud and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.