Microsoft Defender XDR vs ReliaQuest GreyMatter comparison

Microsoft and ReliaQuest are both solutions in the Extended Detection and Response (XDR) category. Microsoft is ranked #6 with an average rating of 8.4, while ReliaQuest is ranked #25 with an average rating of 9.5. Microsoft holds a 3.8% 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

Download the report

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: June 2026).

Buyer's Guide

Microsoft Defender XDR vs. ReliaQuest GreyMatter

June 2026

Download the complete report

Helped 909,153 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 August 2026, in the Extended Detection and Response (XDR) category, the mindshare of Cortex XDR by Palo Alto Networks is 4.5%, down from 5.0% compared to the previous year. The mindshare of Microsoft Defender XDR is 3.8%, down from 5.6% compared to the previous year. The mindshare of ReliaQuest GreyMatter is 0.9%, up from 0.5% 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	4.5%
Microsoft Defender XDR	3.8%
ReliaQuest GreyMatter	0.9%
Other	90.8%

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.

Read full review

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.

Read full review

Md Yousuf Khan

Senior Security Analyst at Tata Consultancy

Unified security monitoring has reduced alert fatigue and improves proactive threat hunting

I use real-time monitoring in ReliaQuest GreyMatter, which significantly improves my security posture. The unified interface helps reduce alert fatigue. I would estimate it saves around 20% in alert fatigue reduction. The automated threat hunting capabilities in ReliaQuest GreyMatter help me stay ahead of threats. The machine learning algorithm benefits my threat intelligence by providing deeper insights and predictions. I use various metrics to rate the success of the predictive threat intelligence in ReliaQuest GreyMatter.

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

"I recommend this solution to others because it is easy to manage, reliable, and overall good to use."

"Previously, we had to install endpoint protection per machine and then scan and update, but Cortex XDR basically does that centrally and predictably, so we have more time to do day-to-day work rather than spend time chasing those endpoints."

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

"The user interface of the solution is sophisticated and straightforward."

"Cortex XDR by Palo Alto Networks has changed the way my security team detects, investigates, and responds to threats, as we are able to see the files, unwanted files, unsecured files, and unauthorized files, so we are quarantining them."

"I like the centralized console and the predictive analysis it does of malware. It is very stable and also scalable."

"The best feature of Cortex XDR by Palo Alto Networks is that it collects logs from different sections such as the endpoint, the network, and the cloud, making it easy to investigate alerts, collect some of the investigation packages related to the infected machines, and provide live response."

"The anti-exploit is impenetrable. We chose Traps because it is the only product that we were not able to get anything past."

More Cortex XDR by Palo Alto Networks pros

"Many people don't realize that Microsoft Azure, Exchange Online, and the security and compliance portal all sync together. For instance, within the Azure portal you can set security restrictions and policies to help secure your tenants... The good part of it is that these products have already been integrated. When you sign on as an admin you have global admin rights and that gives you access to all these features."

"The Endpoint Manager is incredible; it has a very straightforward interface and is exceedingly easy to use. Pulling out and deploying different tags or resources is a simple task across various departments with different levels of security. The notifications are also simple and satisfying; it's great to see the bubble informing us which devices are compliant and which are waiting to update."

"It has been great for us. Previously, we didn't have a solution to protect us, especially from malware, whereas now, we are getting protection up front, especially from the malware attacks coming through emails or endpoints."

"What I appreciate most about Microsoft Defender XDR is the ability to drill down to the process level, the visibility of processes, and the file-level details of what processes are accessing, including the IP addresses for outbound connections."

"If you are considering Microsoft Defender XDR, my advice is that if you are looking for an XDR tool, Microsoft Defender XDR is the easiest to use."

"Microsoft Defender XDR is a complete package of different Defender solutions, including Defender for Endpoint, Defender for Office 365, Defender for Cloud, and Sentinel SIEM, among others."

"The visibility into threats is also very impressive because Microsoft helps you predict things and provides analytics to help you really improve your security. And all of this technology works across the domain, so it is pretty helpful in terms of threat analytics."

"I like that Defender is easy to use and the alerts are all in one central location."

More Microsoft Defender XDR pros

"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

"In reporting they should have a customizable dashboard due to the fact that C-level people don't like reporting to the IT department. They prefer to have a real-time dashboard. That kind of dashboard needs to have various customizations."

"The solution should add unwanted malicious hash values to a block list so that whenever the action is triggered, it will automatically prevent the malicious content."

"The installation should be easier and the Palo Alto pre-sales and sales teams should have more information on the product because they don't know what they are selling."

"There are some default policies which sometimes affect our applications and cause them to run around. In the hotel industry, we use a different type of data versus Oracle and SQL. By default, there are some policies which stop us from running properly. Because of this, the support level is also not that strong. We have to wait to get a results."

"The server sometimes stops continuously to check things so it would be helpful to receive access updates or technical reasons."

"If Palo Alto reduces the pricing slightly for their products, it would make them more scalable in markets such as India and globally for cybersecurity."

"When it comes to malware files, it should be a little quick because, at times, it would give a wrong result in the sense of what it might be on malware, even if it still might be a normal one."

"It'll help if customization was easier."

More Cortex XDR by Palo Alto Networks cons

"There is definitely scope for improvement in the automation area. Because the solution is a SaaS platform, we don't have the overall ability to automate stuff.... There is no direct way to go ahead because it's a SaaS platform."

"From an integration standpoint, it is always improving overall. With Security Copilot coming out, as partners, we are waiting for the GDAP support so that we can actually see Security Copilot on behalf of customers if they subscribe to it."

"The abundance of sub-dashboards and sub-areas within the main dashboard can be confusing, even if it all technically makes sense."

"The interface could be improved. For example, if you want to do a phishing simulation for your employees, it can take a while to figure out what to do. The interface is a bit messy and could be updated. It isn't too bad, but doing some things can be a long process."

"While the XDR platform offers valuable functionalities, it falls short of other solutions in its ability to deliver a cohesive identity experience."

"Some of our older hardware experienced a slight bump in CPU and memory usage. Although I don't have empirical data to back that up, I would suggest possibly more streamlining in the software."

"Correctly updated records are the most significant area for improvement. There have been times when we were notified of a required fix; we would carry out the fix and confirm it but still get the same notification a week later. This seems to be a delay in records being updated and leads to false reporting, which is something that needs to be fixed."

"The advanced threat-hunting capabilities are phenomenal, and the security copilot enhances that, but some data elements could be better or have more context inside of the advanced tables themselves. The schemas feel a little limited to what they're building into the product. It's probably just a maturity thing. I imagine we'll see the features I want in the next year."

More Microsoft Defender XDR cons

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

Pricing and Cost Advice

"If one wishes to work with another team or large number of users at a future point, he must purchase a license for them."

"Its pricing is kind of in line with its competitors and everybody else out there."

"It's way too expensive, but security is expensive. You pay for your licensing, and then you pay for someone to monitor the stuff."

"I feel it is fairly priced."

"Licensing for Palo Alto Networks Cortex XDR can be costly, especially when it comes to a hundred users. A license is required for each user, and the subscription must be renewed on a yearly basis."

"I don't recall what the cost was, but it wasn't really that expensive."

"I don't like that they have different types of licenses."

"Our license will require renewal in August, after which the maintenance will continue as usual."

More Cortex XDR by Palo Alto Networks pricing and cost advice

"Microsoft purposely makes its license combinations complex and includes combinations like Microsoft 365 E3 and Microsoft 365 E5, Office 365 E3, Office 365 E5, and Office 365 E1, so you get confused. Microsoft tries to sell you a bundle of a lot of things together."

"We have a lot of problems in Latin America regarding the price of Microsoft 365 Defender, because the relationship between dollars and the money of the different countries, it's is a lot. Many customers that have small businesses say that they would like the solution but it is too expensive. However, large companies do not find the cost an issue."

"Its licensing and pricing are handled by someone else. My role is limited to incidents or issues with the portal, but you get what you pay for. It is worth the cost."

"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."

"Microsoft is not competitive with the pricing of the solution. The competitors are able to offer lower discounts. The price of the solution is higher."

"The bundling of software makes it easier to manage our setup, but Microsoft purposefully obfuscates this through marketing ploys to hide costs."

"365 Defender is billed per account. I don't know the exact price, but my supervisor told me that Microsoft Defender is cheaper than the alternatives. It's bundled, so you get all the features in one place."

"It has consistently offered highly appealing academic pricing, with distinct rates for higher education and general educational purposes."

More Microsoft Defender XDR pricing and cost advice

Information not available

See which vendors are best for you

Use our free recommendation engine to learn which Extended Detection and Response (XDR) solutions are best for your needs.

See recommendations

909,153 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Construction Company

13%

Financial Services Firm

10%

Comms Service Provider

10%

Manufacturing Company

10%

Financial Services Firm

Computer Software Company

Comms Service Provider

Manufacturing Company

Financial Services Firm

10%

Manufacturing Company

Construction Company

Retailer

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	46
Midsize Enterprise	21
Large Enterprise	54

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...

See all answers

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,...

See all answers

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,...

See all answers

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...

See all answers

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...

See all answers

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 ...

See all answers

Comparisons

Microsoft Defender for Endpoint vs Cortex XDR by Palo Alto Networks

Compared 13% of the time

SentinelOne Singularity Endpoint vs Cortex XDR by Palo Alto Networks

Compared 5% of the time

CrowdStrike Falcon Insight XDR vs Cortex XDR by Palo Alto Networks

Compared 4% of the time

Cortex XSIAM vs Cortex XDR by Palo Alto Networks

Compared 3% of the time

Trellix Endpoint Security Platform vs Cortex XDR by Palo Alto Networks

Compared 3% of the time

More Cortex XDR by Palo Alto Networks Competitors

CrowdStrike Falcon Insight XDR vs Microsoft Defender XDR

Compared 8% of the time

Wazuh vs Microsoft Defender XDR

Compared 6% of the time

SentinelOne Singularity Endpoint vs Microsoft Defender XDR

Compared 4% of the time

Microsoft Defender for Cloud vs Microsoft Defender XDR

Compared 4% of the time

Cybereason XDR vs Microsoft Defender XDR

Compared 2% of the time

More Microsoft Defender XDR Competitors

Expel vs ReliaQuest GreyMatter

Compared 14% of the time

CrowdStrike Falcon Insight XDR vs ReliaQuest GreyMatter

Compared 12% of the time

SentinelOne Singularity Endpoint vs ReliaQuest GreyMatter

Compared 10% of the time

Daylight Security AI-Powered MDR vs ReliaQuest GreyMatter

Compared 5% of the time

Stellar Cyber Open XDR vs ReliaQuest GreyMatter

Compared 2% of the time

More ReliaQuest GreyMatter Competitors

Product Reports

Buyer's Guide

Cortex XDR by Palo Alto Networks

August 2026

Download Cortex XDR by Palo Alto Networks product report

Buyer's Guide

Microsoft Defender XDR

July 2026

Download Microsoft Defender XDR product report

Buyer's Guide

Digital Risk Protection

August 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

June 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: June 2026.

DOWNLOAD NOW

909,153 professionals have used our research since 2012.

See our Microsoft Defender XDR vs. ReliaQuest GreyMatter report.

See our list of best Extended Detection and Response (XDR) vendors.

We monitor all Extended Detection and Response (XDR) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.