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Microsoft Defender for Office 365 vs SentinelOne Singularity Identity comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Dec 1, 2024

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
7.2
Microsoft Defender for Office 365 enhances email protection, reduces costs, and increases productivity, offering invaluable data security.
Sentiment score
7.5
SentinelOne Singularity Identity offered high return on investment with enhanced protection, efficiency, and time savings, justifying higher costs.
In terms of the areas where I saw that return on investment with Microsoft Defender for Office 365, it is related to the risk to our environment, specifically regarding users being scammed or phished.
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Overall, cost of owning and operating our system goes down.
 

Customer Service

Sentiment score
7.0
Microsoft Defender for Office 365 offers reliable support, praised for responsiveness, despite some challenges with clarity and third-party resolutions.
Sentiment score
7.8
SentinelOne Singularity Identity provides responsive customer service with higher tiers offering 24/7 support and prioritizing user success.
Any issues are addressed quickly by Microsoft's support.
we opened tickets, and they typically resolve them quickly.
My experience with customer support and technical support for Microsoft Defender for Office 365 has been excellent.
They have been responsive to our needs as integrators and those of the client.
 

Scalability Issues

Sentiment score
8.2
Microsoft Defender for Office 365 scales seamlessly across configurations, supporting thousands of users with effortless integration and optimal performance.
Sentiment score
8.3
SentinelOne Singularity Identity is praised for scalability, despite occasional integration and deployment challenges, often rated nine or ten.
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.
 

Stability Issues

Sentiment score
7.7
Microsoft Defender for Office 365 is highly reliable, offering stable performance, quick issue resolution, and high user satisfaction ratings.
Sentiment score
8.5
SentinelOne Singularity Identity is highly stable with minimal CPU usage, excellent performance, and effective support for installation issues.
I would assess the stability and reliability of Microsoft Defender for Office 365 as very stable, with barely any issues.
The solution is stable, as we have been using it for the past two years.
Overall, the stability and reliability of Microsoft Defender for Office 365 are good.
 

Room For Improvement

Microsoft Defender for Office 365 needs enhanced virus protection, compatibility, UI, integration, reporting, and cost transparency to improve user experience.
SentinelOne Singularity Identity needs better management, enhanced features, user-friendly policies, improved support, and competitive pricing.
The main area for improvement is simplifying the implementation and rollout process.
There is a different console for different things; I just want one consolidated console.
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 clear roadmap for improvements, including enhancing capabilities with AI and seamless functionality in an MSP model for deeper visibility across multiple agencies.
 

Setup Cost

Enterprise users find Microsoft Defender for Office 365 pricing complex but valuable due to integration with Office 365 features.
SentinelOne Singularity Identity offers competitive pricing, valued integration, and customizable licensing, though pricing transparency is key for executive approval.
We've likely saved 30% of costs.
Microsoft is quite affordable with a lot of features available for any size organization.
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
 

Valuable Features

Microsoft Defender for Office 365 offers comprehensive security with real-time updates and automated threat response, enhancing multi-platform enterprise safety.
SentinelOne Singularity Identity offers AI-driven threat detection, rapid response, and efficient security management with minimal system impact.
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.
The threat intelligence from Microsoft Defender for Office 365 helps prepare us for potential threats before they hit and enables us to make proactive steps, as it gives us IOCs and helps us make more informed decisions.
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
With visibility into endpoint telemetry, SentinelOne does provide useful information to find threat actors and empowers those who are in the business of threat hunting.
 

Categories and Ranking

Microsoft Defender for Offi...
Ranking in Advanced Threat Protection (ATP)
1st
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Email Archiving (1st), Email Security (1st), Microsoft Security Suite (11th), Secure Email Gateway (SEG) (1st)
SentinelOne Singularity Ide...
Ranking in Advanced Threat Protection (ATP)
7th
Average Rating
9.0
Reviews Sentiment
7.5
Number of Reviews
21
Ranking in other categories
Vulnerability Management (11th), Threat Deception Platforms (2nd), Identity Threat Detection and Response (ITDR) (4th)
 

Mindshare comparison

As of May 2025, in the Advanced Threat Protection (ATP) category, the mindshare of Microsoft Defender for Office 365 is 8.8%, down from 14.2% compared to the previous year. The mindshare of SentinelOne Singularity Identity is 2.5%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP)
 

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.
Roftiel Constantine - PeerSpot reviewer
Provides proactive threat remediation, reduces alert volume, and enhances incident response capabilities
During our pre-purchase evaluation of SentinelOne's EDR capabilities three years ago, we were consistently impressed by the positive relationships customers reported having with SentinelOne's engineers, sales teams, and customer success managers. These strong relationships, evident in the customers' unsolicited feedback, highlighted the "soft skills" and intangible qualities that SentinelOne possessed. This positive customer experience has been mirrored in our own interactions with them. Their responsiveness to our needs, particularly when addressing a couple of challenges we faced, has been excellent. They proactively scheduled weekly meetings to demonstrate their commitment to resolving our issues, a customer-centric approach I admire. SentinelOne's dedication to customer service, including their rapid technology updates and responsiveness to our suggestions, has been crucial to our success in protecting our organization. Their ability to quickly incorporate our needs into new releases is truly impressive and sets them apart. Overall, I highly recommend SentinelOne based on our positive interactions across all levels of their organization.
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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
13%
Manufacturing Company
7%
Comms Service Provider
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?
Microsoft is quite affordable with a lot of features available for any size organization.
What needs improvement with Microsoft Defender for Office 365?
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published. It's essential to enhan...
Does SentinelOne have a Virtual Patching functionality?
Yes -- SentinelOne has a Virtual Patching functionality called Virtual Patching and Exploit Shield. This preventive security solution uses behavioral AI to identify and block zero-day attacks and v...
What is your experience regarding pricing and costs for SentinelOne Singularity Identity?
I have no visibility into pricing, setup costs, or licensing as the government handles these aspects directly with SentinelOne. We do the integrating, and they process the payments.
 

Also Known As

MS Defender for Office 365
No data available
 

Overview

 

Sample Customers

Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Information Not Available
Find out what your peers are saying about Microsoft Defender for Office 365 vs. SentinelOne Singularity Identity and other solutions. Updated: April 2025.
851,491 professionals have used our research since 2012.