Microsoft Defender XDR vs ReliaQuest GreyMatter comparison

Why PeerSpot?

Microsoft and ReliaQuest are both solutions in the Extended Detection and Response (XDR) category. Microsoft is ranked #4 with an average rating of 8.4, while ReliaQuest is ranked #32 with an average rating of 9.0. Microsoft holds a 3.5% mindshare in XDR, compared to ReliaQuest’s 0.9% mindshare. Additionally, 98% of Microsoft users are willing to recommend the solution, compared to 100% of ReliaQuest users who would recommend it.

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Microsoft Defender XDR and ReliaQuest GreyMatter based on real PeerSpot user reviews.

Find out in this report how the two Extended Detection and Response (XDR) solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed Microsoft Defender XDR vs. ReliaQuest GreyMatter Report (Updated: October 2026).

Buyer's Guide

Microsoft Defender XDR vs. ReliaQuest GreyMatter

October 2026

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Helped 920,929 peers since 2012

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

Cortex XDR by Palo Alto Net...

Mindshare comparison

As of November 2026, in the Extended Detection and Response (XDR) category, the mindshare of Cortex XDR by Palo Alto Networks is 4.7%, down from 5.8% compared to the previous year. The mindshare of Microsoft Defender XDR is 3.5%, down from 5.8% compared to the previous year. The mindshare of ReliaQuest GreyMatter is 0.9%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Extended Detection and Response (XDR) Mindshare Distribution
Product	Mindshare (%)
Cortex XDR by Palo Alto Networks	4.7%
Microsoft Defender XDR	3.5%
ReliaQuest GreyMatter	0.9%
Other	90.9%

Extended Detection and Response (XDR)

Featured Reviews

ABHISHEK_SINGH

Senior Process Expert at A.P. Moller - Maersk

Gained full visibility and streamlined threat detection through behavior-based insights and AI integration

Initially, we got to have a lot of false positives when we onboarded, but nowadays it's quite smooth. We have fine-tuned our security policies and allowed different levels of policies to get rid of those false positives. Currently, we are getting a fairly good amount of incidents that are not false positives or benign, but actionable items. The process is streamlined. In the initial days, the operations used to get involved in a lot of benign and other activities, but now the process is streamlined. We are leveraging the auto-detection and remediation plans. The operations teams are now more involved in other business roles as well, not just looking into the logs and fetching out what's happening there. They have fixed a lot of things. Initially, they didn't have IAC code drift detection, cloud posture management, or security posture management, but they have those now. They purchased different vendors and did a merger with that. They have now Prisma Cloud that gets integrated and now they are working with Cortex Cloud. Everything that was negative has now been addressed, and the product altogether looks to be in a very better and mature shape now. Currently, it's more or less detecting the workloads with AI-based best practices. Since most organizations are consuming AI agents and other things, we are looking forward to seeing what other feature enhancements Palo Alto can support in that.

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reviewer2812758

Infosec at a government with 10,001+ employees

Integrated defenses have unified threat hunting, phishing simulations, and identity investigations

I appreciate Microsoft Defender XDR's MDE, Microsoft Defender tool, which has Attack Simulator. Instead of doing a phishing campaign and getting a separate tool, Microsoft Defender XDR does it all. These features of Microsoft Defender XDR have helped us conduct a phishing campaign quarterly, which has been beneficial. I also appreciate the fact that it has Defender for Office integrated, Defender for Identity, and everything integrated together. I would describe the process of using Microsoft Defender XDR to prioritize incidents in my security operations as quite decent. I appreciate the automatic alerting system where any incidents or alerts we receive come directly to our email. From there, we can open the email, go directly to Microsoft Defender XDR, and start our investigations and remediations. I perceive the integration of security and identity access management in Microsoft Defender XDR as affecting my identity protection strategies very well because it is well integrated with Purview, integrated well with Entra ID, and integrated well with Exchange. I especially appreciate MDO, the Office product. If anything happens and I want to conduct an investigation, it takes me directly to Exchange, where I can also investigate any emails or phishing incidents. Instead of going to different portals, everything can be done from Microsoft Defender XDR. If necessary for further investigation, Microsoft Defender XDR then directs me to that environment. I would assess the integration of AI in guiding security actions within Microsoft Defender XDR as quite positive. Recently, Security Copilot went big, and it is beneficial that I can use that, especially to write KQL. I can do threat hunting features and intelligence all within using Microsoft's Security Copilot. It also has a nice AI feature for threat hunting. I know that all the Defender logs go to Sentinel, and I can pull it up from Microsoft Defender XDR or from Sentinel. The fact that I can actually do all that within Microsoft Defender XDR is a nice feature. In the top module, I can do threat lookups, and I can actually type KQLs in Microsoft Defender XDR and look up incidents. Predictive shielding has had a nice impact on my proactive security measures. It is beneficial that it has, similar to Entra ID, a secure score. For me to improve the product, the secure score helps me out. If I rate it from highest to lowest, I can see what things I can improve. Secure score helps me see what areas I can improve in Microsoft Defender XDR to increase my score and bring it to 80 or more. Knowing Microsoft Defender XDR from using it since 2019, before COVID days, I know that they have improved significantly. It is much more user-friendly and has a very nice vulnerability feature that I find handy and useful. The fact that this feature integrates into Intune is also very decent.

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Omkar Korulkar

Technology Analyst at a tech vendor with 10,001+ employees

Centralized visibility has improved SOC investigations and supports faster, more accurate incident response

I think ReliaQuest GreyMatter could be improved further in a few areas. First, I want to see more flexibility in dashboard customization so analysts can configure views based on their roles and investigation requirements. Second, improving alert correlation accuracy and reducing overall false positive rates would help analysts focus on genuine possible threats rather than spending time validating repetitive low-priority alerts or false positives. Third, more detailed investigation timelines, better reporting capabilities, and simpler investigation integration configuration would make the platform more effective. I suggest continuously improving automation workflows to reduce repetitive manual tasks while allowing analysts to maintain control over critical response actions. Overall, I think these enhancements can make the platform more user-friendly and improve the efficiency of SOC operations. One additional improvement would be enhancing the investigation experience by providing more detailed context directly within the alert. For example, having a clear incident timeline, related alerts, historical activity, and threat intelligence information available in one place would make investigations easier. I believe these improvements would make day-to-day SOC operations smoother and allow analysts to focus more on proactive threat hunting and other complex investigations.

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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

"The information the dashboard provides is very clear."

"Its ability to react to cyber data attacks is awesome."

"They did what they said, and this solution could apply to any scenario."

"The most valuable feature of Cortex XDR by Palo Alto Networks is its machine-learning capabilities. Additionally, there is full integration with other solutions."

"The main benefit of using Cortex XDR by Palo Alto Networks while employing Palo Alto Firewall at the internet edge is that it improves security on our endpoint devices, integrating seamlessly with Palo Alto Firewalls to deliver comprehensive network, analyst, and security details all in a single dashboard, which allows us to manage everything from our network devices."

"It's a nice product that's stable and scalable."

"The product's initial setup phase is very easy."

"Cortex XDR's most valuable feature is its intelligence-based dashboards."

More Cortex XDR by Palo Alto Networks pros

"The 'Incidents and Alerts' tab is a valuable feature where we can find triggered alerts."

"We use Microsoft 365 Defender to help secure threats of the Office package, such as Word, Excel, and PowerPoint, and additionally, it can fix issues."

"The proactive remediation aspects and the surfacing of suspicious activity for investigation and escalation are the key aspects we appreciate most."

"On the Windows side, Microsoft Defender XDR is definitely integrated into the operating system. Once we have it on the security dashboard, we can see a real-time storyline."

"The feature of Microsoft Defender XDR that I preferred the most traditionally was its focus on endpoint protection, but now identity is right up there with endpoint security. Identity is important because different compromises start at the identity level. This allows us to understand what actions are being taken, who is doing them, and whether it is actually them."

"I like 365 Defender's advanced threat hunting. The dashboard is user-friendly with templates for site policies, etc. The most important use case is evaluating the risk links and applications."

"The best feature is probably the alert generation. When I do a security reset, the other session triggers instantly from the Defender console, and I can work on it. The policies are three times, but they are also ready to install it."

"Defender is easy to use. It has a nice console, and everything is all in one place."

More Microsoft Defender XDR pros

"One of the best features that ReliaQuest GreyMatter offers is the ability to bring together security tools and data that support threat investigation, detection, and response."

"ReliaQuest GreyMatter has helped us to reduce security incidents by 89%, which is a significant amount of incidents we have seen."

"ReliaQuest GreyMatter saves around 60% of time or resources."

Cons

"As an improvement, I would like to see enhanced connection speeds."

"We would also like to have advanced tech protection and email scanning."

"I have run into some detection issues with Cortex XDR. It needs to be better at detection of internal attacks."

"Initially, we got to have a lot of false positives when we onboarded, but nowadays it's quite smooth."

"The product's pricing could be better."

"The tool needs to be improved in terms of integration and interface."

"Product might have some bugs."

"This is a very costly product."

More Cortex XDR by Palo Alto Networks cons

"The management features could be improved, particularly in terms of better integration with Intune, Microsoft's cloud-based management solution."

"The onboarding and offboarding need improvement. I work with other vendors as well, and they have an option to add a device or remove a device from the portal, whereas with Microsoft 365 Defender, we need to do that manually. However, once you do that, everything can be controlled through the portal, but getting the device onboarded and offboarded is currently manual. If we have an option to simply remove a device from the portal or get a device added from the portal, it would be more convenient. The rest of the features are similar. This is the only area where I found it different from others. I would also like to be able to simply filter with a few of the queries that are already there."

"At times, there may be delays in the execution of certain actions and their effects."

"When discussing the secure score, which includes overviews and recommended actions, some of these recommended actions are not applicable to us, particularly those related to Microsoft Internet Explorer, which we do not use in any of our environments."

"Support is hit or miss. Microsoft wants you to buy premium support contracts. Though they call themselves professional support, it's almost like throwing questions into a black hole. You get an answer, but it's never helpful."

"For some scenarios, it provides good visibility into threats, and for some scenarios, it doesn't. For example, sometimes the URLs within the emails have destinations, and you do get a screenshot and all further details, but it's not always the case. It would be good if they did a better job of enabling that for all the emails that they identified as malicious. When you get an email threat, you can go into the email and see more details, but the URL destination feature doesn't always show you a screenshot of the URL in that email. It also doesn't always give you the characteristics relating to that URL. It would be quite good if the information is complete where it says that we identified this URL, and this is what it looks like. There should be some threat intel about it. It should give you more details."

"There's still some more work to be done there. Additionally, the limited terminal live access an analyst has is very restricted."

"This solution could be improved if it included features such as those offered by Malwarebytes."

More Microsoft Defender XDR cons

"Areas that have room for improvement include user interface and integration."

"ReliaQuest GreyMatter is stable to a certain extent, but there is still some room for improvement."

Pricing and Cost Advice

"Cortex XDR's pricing is ok."

"The solution is expensive. It's pricing is on a yearly-basis."

"We pay about $50,000 USD per year for a bundle that includes Cortex XDR."

"Cortex XDR by Palo Alto Networks is quite an expensive solution."

"Cortex XDR by Palo Alto Networks is an expensive solution."

"The tool's price is moderate."

"Traps pays for itself within the first 16 months of a three-year subscription. This is attributed to OPEX savings, as security teams spent less time trying to identify and isolate malware for analysis as a result of a reduction in malware incidents, false positives, and breach avoidance."

"It is "expensive" and flexible."

More Cortex XDR by Palo Alto Networks pricing and cost advice

"365 Defender can get expensive because you pay per gigabyte of data ingested. On the other hand, much of the data available in the other Microsoft security solutions are made available relatively cheaply—sometimes at cost or for free. Integrating only a limited set of third-party solutions with Sentinel would be cost-effective. It's much more affordable if companies only have Microsoft stuff."

"The functionality is fantastic, but for medium and small-sized companies it's overpriced. It would be better if it were a little bit cheaper."

"It can be complex to navigate since customers have varying licensing agreements across Microsoft. If they go straightforward with E5 for all users, it's simple, but combinations based on budget constraints can complicate things."

"Defender plan 1 is tenant-wise, and Defender plan 2 is per-user, which makes it more expensive. To have certain features, you would need to purchase the E5 license. For all of the capabilities that the tool provides, the price, though it can be high, is fair."

"The product is fairly priced for what we get from it."

"It is fairly priced because we get complete integrated services with the E5 license."

"The solution is affordable, and we haven't been hit with any hidden costs. The subscription model is straightforward, and it's easy to understand how much additional features cost. If we need to cancel a license or feature, we do that well in advance to avoid being charged for it, but overall, the pricing and licensing are simple and easy."

"Licensing is somewhat confusing, particularly when presenting our pitch decks to stakeholders and leveraging key features in premium SKUs, but we managed with some assistance from Microsoft."

More Microsoft Defender XDR pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Comms Service Provider

14%

Outsourcing Company

12%

Construction Company

10%

Manufacturing Company

10%

Financial Services Firm

Outsourcing Company

Comms Service Provider

Computer Software Company

Financial Services Firm

10%

Manufacturing Company

Construction Company

Comms Service Provider

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	50
Midsize Enterprise	21
Large Enterprise	57

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	28
Large Enterprise	41

No data available

Questions from the Community

Cortex XDR by Palo Alto vs. Sentinel One

Cortex XDR by Palo Alto vs. SentinelOne SentinelOne offers very detailed specifics with regard to risks or attacks. ...

See all answers

Comparing CrowdStrike Falcon to Cortex XDR (Palo Alto)

Cortex XDR by Palo Alto vs. CrowdStrike Falcon Both Cortex XDR and Crowd Strike Falcon offer cloud-based solutions th...

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How is Cortex XDR compared with Microsoft Defender?

Microsoft Defender for Endpoint is a cloud-delivered endpoint security solution. The tool reduces the attack surface,...

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What is your experience regarding pricing and costs for Microsoft 365 Defender?

My experience with the pricing, setup costs, and licensing of Microsoft Defender XDR is that we are on an E5 license,...

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What needs improvement with Microsoft 365 Defender?

From my perspective, Microsoft Defender XDR can be improved with better visibility in certain areas where I can trigg...

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What is your primary use case for Microsoft 365 Defender?

My main use cases for Microsoft Defender XDR are telemetry, advanced hunting, and the ability to perform host isolati...

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What is your experience regarding pricing and costs for ReliaQuest GreyMatter?

I find that the pricing is cost-effective.

See all answers

What needs improvement with ReliaQuest GreyMatter?

Areas that have room for improvement include user interface and integration.

See all answers

What is your primary use case for ReliaQuest GreyMatter?

I use ReliaQuest GreyMatter for detection and response, XDR, and SIEM. The best features I like about GreyMatter the ...

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Comparisons

Microsoft Defender for Endpoint vs Cortex XDR by Palo Alto Networks

Compared 16% of the time

SentinelOne Singularity Endpoint vs Cortex XDR by Palo Alto Networks

Compared 4% of the time

CrowdStrike Falcon vs Cortex XDR by Palo Alto Networks

Compared 4% of the time

Symantec Endpoint Security vs Cortex XDR by Palo Alto Networks

Compared 3% of the time

Cortex XSIAM vs Cortex XDR by Palo Alto Networks

Compared 3% of the time

More Cortex XDR by Palo Alto Networks Competitors

CrowdStrike Falcon vs Microsoft Defender XDR

Compared 7% of the time

Wazuh vs Microsoft Defender XDR

Compared 5% of the time

SentinelOne Singularity Endpoint vs Microsoft Defender XDR

Compared 4% of the time

Microsoft Defender for Cloud vs Microsoft Defender XDR

Compared 3% of the time

Secureworks Taegis XDR vs Microsoft Defender XDR

Compared 2% of the time

More Microsoft Defender XDR Competitors

Expel vs ReliaQuest GreyMatter

Compared 13% of the time

CrowdStrike Falcon vs ReliaQuest GreyMatter

Compared 11% of the time

SentinelOne Singularity Endpoint vs ReliaQuest GreyMatter

Compared 9% of the time

Daylight Security AI-Powered MDR vs ReliaQuest GreyMatter

Compared 5% of the time

Huntress Managed EDR vs ReliaQuest GreyMatter

Compared 3% of the time

More ReliaQuest GreyMatter Competitors

Product Reports

Buyer's Guide

Cortex XDR by Palo Alto Networks

November 2026

Download Cortex XDR by Palo Alto Networks product report

Buyer's Guide

Microsoft Defender XDR

October 2026

Download Microsoft Defender XDR product report

Buyer's Guide

Digital Risk Protection

October 2026

Download ReliaQuest GreyMatter product report

Also Known As

Cyvera, Cortex XDR, Palo Alto Networks Traps

Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender

No data available

Overview

Cortex XDR by Palo Alto Networks provides advanced threat detection with AI-driven endpoint protection and seamless integration, ensuring multi-layered security and automatic threat response.

Cortex XDR is designed to safeguard endpoints against malware and suspicious activities. It offers advanced threat detection and response capabilities using behavioral analysis, AI, and machine learning. It seamlessly integrates with security infrastructures, providing endpoint security, firewall integration, and enhanced visibility in both cloud-based and on-premises environments.

What are the key features of Cortex XDR?

Advanced Threat Detection: Uses AI and machine learning for proactive threat identification.
Multi-layered Security: Combines various security measures for comprehensive protection.
Endpoint Protection: Safeguards against malware and exploits.
Behavioral Analysis: Monitors suspicious activity for early detection.
Automatic Threat Response: Automates responses to neutralize threats.

What benefits should users expect?

Ease of Use: Simplifies security management with intuitive design.
Resource Efficiency: Minimizes impact on system resources.
Integration Capabilities: Works well with existing security setups.
Reduced Analyst Workload: Automates processes to decrease manual intervention.

Organizations in diverse sectors deploy Cortex XDR to protect against malware, leveraging its advanced threat detection capabilities. Its integration with existing security infrastructures appeals to those seeking comprehensive protection in both cloud and on-premises environments, providing enhanced visibility and threat intelligence.

Palo Alto Networks

Microsoft Defender XDR is a comprehensive security solution designed to protect against threats in the Microsoft 365 environment.

It offers robust security measures, comprehensive threat detection capabilities, and an efficient incident response system. With seamless integration with other Microsoft products and a user-friendly interface, it simplifies security management tasks.

Users have found it effective in detecting and preventing various types of attacks, such as phishing attempts, malware infections, and data breaches.

Watch the Microsoft demo video here: Microsoft Defender XDR demo video.

Microsoft

ReliaQuest GreyMatter enhances security operations by integrating tools and delivering automation that increases efficiency and visibility.

ReliaQuest GreyMatter optimizes security infrastructures through its platform by connecting disparate technologies, facilitating real-time threat detection, and responding effectively. By leveraging automation, it reduces manual workloads and improves response times. Its ability to unify operations across different tools makes it a preferred choice for maximizing productivity and maintaining a robust security posture.

What are the essential features of ReliaQuest GreyMatter?

Tool Integration: Seamlessly connects existing security tools to ensure cohesive protection.
Threat Detection: Offers real-time insights to identify potential threats promptly.
Automation: Reduces manual efforts by automating routine security processes.
Advanced Analytics: Provides enhanced data analysis for better decision-making.
Flexible Deployment: Compatible with different environments, allowing tailored implementation.

What benefits or ROI should users consider?

Increased Efficiency: Streamlined operations through integrated platforms.
Cost Reduction: Cuts down expenses by reducing manual tasks and productivity loss.
Improved Security Posture: Ensures comprehensive threat detection and response.
Scalability: Grows with organizational needs without compromising performance.
Time Savings: Accelerates incident response and resolution times.

ReliaQuest GreyMatter is effectively implemented in industries such as finance, healthcare, and energy, where security is paramount. Its ability to adapt to specific sector needs and regulatory requirements makes it versatile for targeted use in diverse environments.

ReliaQuest

Sample Customers

CBI Health Group, University Honda, VakifBank

Accenture, Deloitte, ExxonMobil, General Electric, IBM, Johnson & Johnson and many others.

Information Not Available

Buyer's Guide

Microsoft Defender XDR vs. ReliaQuest GreyMatter

October 2026

Free Report: Microsoft Defender XDR vs. ReliaQuest GreyMatter

Find out what your peers are saying about Microsoft Defender XDR vs. ReliaQuest GreyMatter and other solutions. Updated: October 2026.

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