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Microsoft Defender XDR vs SentinelOne Singularity AI SIEM 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:
 

Categories and Ranking

Microsoft Defender XDR
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
106
Ranking in other categories
Endpoint Detection and Response (EDR) (7th), Extended Detection and Response (XDR) (3rd), Microsoft Security Suite (5th)
SentinelOne Singularity AI ...
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
Security Information and Event Management (SIEM) (51st), AI Observability (31st)
 

Mindshare comparison

While both are Security Software solutions, they serve different purposes. Microsoft Defender XDR is designed for Extended Detection and Response (XDR) and holds a mindshare of 4.9%, down 6.8% compared to last year.
SentinelOne Singularity AI SIEM, on the other hand, focuses on Security Information and Event Management (SIEM), holds 1.2% mindshare, up 0.1% since last year.
Extended Detection and Response (XDR) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender XDR4.9%
CrowdStrike Falcon10.5%
Wazuh7.9%
Other76.7%
Extended Detection and Response (XDR)
Security Information and Event Management (SIEM) Market Share Distribution
ProductMarket Share (%)
SentinelOne Singularity AI SIEM1.2%
Splunk Enterprise Security7.4%
Wazuh7.3%
Other84.1%
Security Information and Event Management (SIEM)
 

Featured Reviews

KO
House security operator at Cypress Creek Renewables
Advanced threat hunting saves significant time in tracking and responding to incidents
Microsoft Defender XDR could be improved with a lower price. My main suggestion would essentially be what Copilot is providing, which is a single pane of glass, so I don't have to go to different windows. That's just a workflow consideration for me. It would be great to have all the information centralized into one particular data app. If I need to open up extra ones, I can, however, I would appreciate a future where everything I need is right there on one single pane of glass. Beyond that, there's really nothing else I see that I would want Microsoft to improve.
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
9%
Manufacturing Company
8%
Comms Service Provider
7%
Healthcare Company
10%
Comms Service Provider
9%
Computer Software Company
7%
Performing Arts
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business47
Midsize Enterprise25
Large Enterprise38
No data available
 

Questions from the Community

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?
My experience with pricing, setup, costs, and licensing of Microsoft Defender XDR is tied to our E5 subscription, which is very straightforward for us. We also purchase the uplift for our mobile us...
What needs improvement with Microsoft 365 Defender?
I am not aware of a mobile app that would be available for my team. With a single analyst, if she is ever away, it would be beneficial to have easier access. While she can use the web portal, the e...
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Also Known As

Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender
No data available
 

Overview

 

Sample Customers

Accenture, Deloitte, ExxonMobil, General Electric, IBM, Johnson & Johnson and many others.
Information Not Available
Find out what your peers are saying about CrowdStrike, Trend Micro, Microsoft and others in Extended Detection and Response (XDR). Updated: January 2026.
881,114 professionals have used our research since 2012.