Try our new research platform with insights from 80,000+ expert users

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
7.3
Microsoft Defender for Office 365 is praised for enhancing security, reducing costs, and improving productivity with integrated threat protection.
Sentiment score
6.7
Microsoft Defender XDR provides high ROI by consolidating security tools, streamlining operations, and enhancing security, despite licensing costs.
It has also decreased our time to detection and response by about 15 to 20 percent.
Overall, cost of owning and operating our system goes down.
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
We can quarantine and isolate a device within minutes.
Microsoft Defender XDR has saved me at least 50% of my time.
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.
 

Customer Service

Sentiment score
6.0
Microsoft Defender for Office 365 support is mixed, praised for responsiveness but criticized for delays and outdated documentation.
Sentiment score
6.2
Microsoft Defender XDR's support is timely and responsive, yet smaller organizations experience slower, less effective assistance than larger ones.
Over the past two years, there have been no critical problems.
we opened tickets, and they typically resolve them quickly.
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
8.0
Microsoft Defender for Office 365 seamlessly scales for global users, enabling effective cybersecurity with adaptable cloud-based capabilities and careful planning.
Sentiment score
7.6
Microsoft Defender XDR scales well for various organizations, efficiently supporting growth and flexibility despite some network deployment challenges.
We have never faced scalability problems, and Microsoft manages it effectively.
Microsoft Defender for Office 365 scales transparently for us, as we grew from 1,000 users to 3,000 users, and we didn't notice much difference.
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
7.5
Microsoft Defender for Office 365 is praised for its stability, reliability, operational effectiveness, and high user satisfaction despite minor issues.
Sentiment score
8.0
Microsoft Defender XDR is praised for high stability, reliable performance, minimal issues, frequent updates, and prompt issue resolution.
The solution is stable, as we have been using it for the past two years.
I would assess the stability and reliability of Microsoft Defender for Office 365 as very stable, with barely any issues.
Overall, the stability and reliability of Microsoft Defender for Office 365 are good.
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 better virus blocking, integration, threat detection, user-friendly configuration, and competitive pricing improvements.
Microsoft Defender XDR requires enhancements in speed, integration, automation, AI, ease-of-use, and industry-specific threat intelligence.
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.
There is a different console for different things; I just want one consolidated console.
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 offers comprehensive security, valued for integration with E3/E5 licenses, despite varied perceptions on cost.
Microsoft Defender XDR pricing is seen as complex but fair, with high costs alleviated in bundled Microsoft 365 packages.
We've likely saved 30% of costs.
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 provides comprehensive security features, enhancing protection and efficiency across platforms with real-time threat detection.
Microsoft Defender XDR integrates tools for comprehensive security, offering threat detection, automation, identity protection, and enhanced 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.
The value of the DLP feature is significant to us because we have internal data, sometimes sensitive, and the users may not always be aware of security and privacy, which might lead them to send out information mistakenly to external parties.
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
10th
Average Rating
8.4
Reviews Sentiment
6.9
Number of Reviews
53
Ranking in other categories
Email Archiving (1st), Email Security (1st), Advanced Threat Protection (ATP) (2nd), Secure Email Gateway (SEG) (1st)
Microsoft Defender XDR
Ranking in Microsoft Security Suite
5th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
102
Ranking in other categories
Endpoint Detection and Response (EDR) (5th), Extended Detection and Response (XDR) (2nd)
 

Mindshare comparison

As of September 2025, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Office 365 is 3.1%, up from 2.2% compared to the previous year. The mindshare of Microsoft Defender XDR is 6.5%, up from 5.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite Market Share Distribution
ProductMarket Share (%)
Microsoft Defender XDR6.5%
Microsoft Defender for Office 3653.1%
Other90.4%
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.
MohtesanShaikh - PeerSpot reviewer
Experience improves security management and simplifies threat protection
I have created automated investigations, and while they work, they operate rather slowly in the Microsoft portal. If I automate something, it takes considerable time; if I do it manually, I can complete it in a quarter of the time. The automation response being slow is the main concern; when an incident occurs or if I run a remediation, it takes significant time to complete the remediation. There are some limitations regarding the scalability of Microsoft Defender XDR with specific licensing. For SMB customers, there is only Microsoft Defender for Business, and if they want more features such as XDR features and automation investigation or incident response, they need to purchase Defender for Endpoint. We are currently using the EDR.
report
Use our free recommendation engine to learn which Microsoft Security Suite solutions are best for your needs.
867,341 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise8
Large Enterprise27
By reviewers
Company SizeCount
Small Business46
Midsize Enterprise23
Large Enterprise37
 

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?
Microsoft is quite affordable with a lot of features available for any size organization.
What needs improvement with Microsoft Defender for Office 365?
I think that Microsoft Defender for Office 365 could be improved if it could use VirusTotal to compare the programs or anything that I download. VirusTotal helps to identify viruses, malware, troja...
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?
The pricing for Microsoft Sentinel operates on a pay-as-you-go model based on data ingestion. I recall that Defender XDR pricing is based on the number of endpoints.
What needs improvement with Microsoft 365 Defender?
For Microsoft Defender XDR ( /categories/extended-detection-and-response-xdr ), there is currently no ability to reset passwords for on-premises accounts, which is a key challenge. Incident managem...
 

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: July 2025.
867,341 professionals have used our research since 2012.