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Microsoft Defender XDR vs Microsoft Defender for Office 365 comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
7.4
Organizations saw increased productivity, cost savings, and enhanced security with Microsoft Defender for Office 365's advanced features.
Sentiment score
7.3
Organizations achieve positive ROI with Microsoft Defender XDR by consolidating security measures, enhancing protection, and saving time and resources.
It has also decreased our time to detection and response by about 15 to 20 percent.
We can quarantine and isolate a device within minutes.
Ever since we turned on the M5 feature set back in June, we have seen a reduced number of potentially malicious clicks and faster alerting when incidents occur.
Previously, identifying and containing threats took a long time, but now, with Microsoft Defender XDR, it takes just a few minutes.
 

Customer Service

Sentiment score
6.9
Microsoft Defender for Office 365 support is praised for responsiveness but has inconsistencies, especially in first-level assistance.
Sentiment score
6.2
Microsoft Defender XDR support ranges in effectiveness; premium users receive better service, while standard support often involves delays and inefficiencies.
Over the past two years, there have been no critical problems.
Customer service and support have been fantastic.
You get stuck in low-level support for way longer than you should, instead of them escalating the issue up the chain.
It's critical to escalate SEV B issues immediately to a domestic engineer.
Once issues are escalated to the second or third layer, the support is much better.
 

Scalability Issues

Sentiment score
8.1
Microsoft Defender for Office 365 scales effectively, seamlessly expanding capacity with minimal maintenance, suitable for large and growing organizations.
Sentiment score
8.0
Microsoft Defender XDR is scalable, integrating seamlessly across devices and departments, despite some limitations with specific requirements.
We have never faced scalability problems, and Microsoft manages it effectively.
Microsoft Defender XDR shows tremendous scalability, much more so than on-premises solutions.
Microsoft Defender XDR scales pretty well.
It is suitable for enterprise-level deployment but has room for improvement.
 

Stability Issues

Sentiment score
7.7
Microsoft Defender for Office 365 is reliable, with 99.9% availability and efficient bug fixes, offering seamless performance and stability.
Sentiment score
7.8
Microsoft Defender XDR is highly stable, reliable, and effective, with minimal bugs and proactive issue resolution ensuring user confidence.
The solution is stable, as we have been using it for the past two years.
The service has remained consistently online, with any issues isolated to specific components, suggesting a well-designed and modular architecture.
The services within our ecosystem have been reliable, meeting their SLAs.
It provides high-fidelity signals.
 

Room For Improvement

Microsoft Defender for Office 365 needs enhanced threat detection, integration, support, usability, documentation, and transparent pricing to address customer concerns.
Microsoft Defender XDR requires improvements in speed, integration, cost-efficiency, support, and AI capabilities for a better user experience.
The main area for improvement is simplifying the implementation and rollout process.
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
I would reduce the cost.
The licensing process needs improvement and clarification.
Improvements are needed in automated response capabilities.
Some inconsistencies exist between blades, which could be improved for a more seamless user and UI experience.
 

Setup Cost

Microsoft Defender for Office 365, often pricey for SMEs, offers extensive security features with complex user-based licensing.
Microsoft Defender XDR pricing is competitive with Microsoft 365, though standalone costs and licensing complexity impact user perception.
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Microsoft is quite affordable with a lot of features available for any size organization.
There are certainly savings when using Microsoft Defender XDR, which can range from 30%, 40%, and even up to 50%.
I would rate the pricing as eight out of ten, indicating it is a reasonable cost for the product.
Microsoft purposefully obfuscates this through marketing ploys to hide costs.
 

Valuable Features

Microsoft Defender for Office 365 offers integrated protection with features like anti-malware and threat detection, enhancing security through AI.
Microsoft Defender XDR strengthens security with integration, threat detection, centralized management, and cloud service compatibility, enhancing IT efficiency.
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Microsoft Defender for Office 365 is now part of a centralized tenant for my entire group.
With Microsoft threat intelligence information, it detects various types of threats, including insider attacks, malicious content, and data exfiltration.
This allows us to secure our systems in advance and proactively improve security, rather than waiting for incidents to occur.
Once we have it on the security dashboard, we can see a real-time storyline.
 

Categories and Ranking

Microsoft Defender for Offi...
Ranking in Microsoft Security Suite
11th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
49
Ranking in other categories
Email Security (1st), Advanced Threat Protection (ATP) (1st)
Microsoft Defender XDR
Ranking in Microsoft Security Suite
3rd
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
100
Ranking in other categories
Endpoint Detection and Response (EDR) (5th), Extended Detection and Response (XDR) (4th)
 

Mindshare comparison

As of May 2025, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Office 365 is 2.4%, down from 2.8% compared to the previous year. The mindshare of Microsoft Defender XDR is 6.0%, down from 7.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite
 

Featured Reviews

Tolu Omolaja - PeerSpot reviewer
Great URL scanning and attachment scanning, but I would like more proactive threat analysis
The two main features that prove most beneficial for us are URL scanning and attachment scanning. URL scanning involves an automatic scan of links and emails. When a user clicks on a link within an email, the system promptly checks the link's safety. If the link is deemed safe, access is granted automatically. However, if it is flagged as unsafe, we receive feedback and notification to caution us about the potentially harmful link. At this point, we are presented with the option to proceed or return. I have personally witnessed the system identify a few unsafe links, making this the primary advantage of using the solution. The second crucial aspect is the scanning of attachments. When an email containing an attachment arrives, we receive a notification of the new email, along with information that the attachment is being scanned for threats. This additional layer of security provides peace of mind for our organization. While Microsoft Defender for Office 365 offers numerous features, these two stand out as particularly impressive and valuable to us.
Gabor Nyerd - PeerSpot reviewer
Includes four services and four products, which can help organizations a lot
We found that sometimes integrations work, but testing them can take some time. Sometimes, configurations take much longer than expected. We have a configuration in place that needs to be synchronized with another server. However, the servers are four hours apart, so this can cause delays. In general, I believe that the time it takes to configure and test a service should be shorter. Sometimes, it can take a couple of hours to test a single configuration setting. Other times, it is only ten or fifteen minutes, which is normal. However, sometimes, even immediate actions can be triggered by configuration changes, and some settings can take up to eight hours to complete. I believe that this time can be improved. Microsoft is making a lot of improvements to its services in a short period of time. This is a good thing, as it means that the services are constantly being updated and improved. However, it can be challenging for customers to keep up with the changes. For example, a customer may read about an update, understand it, and share it with their colleagues and boss. However, it may take days or weeks to test the update and get the necessary approvals. This can be especially challenging for large customers with many users or machines. In some cases, Microsoft may change a service before the customer has had a chance to implement the previous update. This can be frustrating for customers, as it means that they have to constantly learn new things and adjust their workflows. On the one hand, it is important for Microsoft to keep updating and improving its services. This helps to ensure that the services are meeting the customers' needs and that they are staying ahead of the competition. Microsoft should also be mindful of the challenges that these changes can create for customers. One way to address this challenge is to provide customers with more time to implement changes. Microsoft could also provide more information about upcoming changes so that customers can plan ahead. Ultimately, Microsoft needs to strike a balance between keeping its services up-to-date and providing customers with a smooth transition to new features.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
Computer Software Company
17%
Financial Services Firm
9%
Manufacturing Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Microsoft Defender for Office 365?
Threat Explorer is an invaluable tool for me, and it plays a crucial role in helping me discern the origins of various email campaigns, pinpointing where they emanate from, and identifying the indi...
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
Money-wise, it is a part of the Office 365 ( /products/office-365-reviews ) suite, making it slightly more expensive compared to Trend Micro. Although Defender is free, you have to pay separately f...
What needs improvement with Microsoft Defender for Office 365?
The main area for improvement is simplifying the implementation and rollout process. There are many conditions to be met, making it challenging to ensure every system is protected. Troubleshooting ...
What do you like most about Microsoft 365 Defender?
Microsoft Defender XDR provides strong identity protection with comprehensive insights into risky user behavior and potential indicators of compromise.
What is your experience regarding pricing and costs for Microsoft 365 Defender?
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.
What needs improvement with Microsoft 365 Defender?
There is nothing I can think of at the moment that needs improvement. I am a contractor and finishing up soon, so I haven't encountered any issues requiring enhancements.
 

Also Known As

MS Defender for Office 365
Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Accenture, Deloitte, ExxonMobil, General Electric, IBM, Johnson & Johnson and many others.
Find out what your peers are saying about Microsoft Defender XDR vs. Microsoft Defender for Office 365 and other solutions. Updated: April 2025.
850,028 professionals have used our research since 2012.