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Microsoft Defender for Business vs SentinelOne Singularity Complete comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 25, 2026

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
6.1
Microsoft Defender for Business improves security, enhances productivity, and reduces costs but may have delays in financial returns.
Sentiment score
7.3
SentinelOne Singularity Complete boosts security efficiency and reduces costs with ease of use, rich features, and fast response.
Using Microsoft Defender for Business results in cost reductions as it consolidates various features under one product, saving around 20% to 30% of the budget.
Consultant at Dell Technologies
The value I see in Microsoft Defender for Business is in its ability to track and respond to application usage and security threats through its CASB and automation features, which are cost-beneficial.
SentinelOne Singularity Complete has helped reduce my organization's mean time to detect by fifty percent.
Director, Infrastructure & Security at Dreamscape Companies
Since then, I have not faced any intrusions, which is one reason I chose SentinelOne over ESET.
Computer Technician at VILLE DE POINTE-CLAIRE
We have not faced any attacks since we implemented it.
Information Security Principal at a venture capital & private equity firm with 1,001-5,000 employees
 

Customer Service

Sentiment score
5.2
Microsoft Defender for Business support is efficient but inconsistent, with variable responsiveness and differing opinions on staff knowledge and resolution times.
Sentiment score
7.2
SentinelOne Singularity Complete's customer support is praised for responsiveness, knowledge, and personalized service, despite some communication limitations.
It is rated ten out of ten for its quality and assistance.
Solution Consultant at BIM Group of Companies
The onboarding support is exceptional, ensuring seamless integration and implementation.
Chief Cybersecurity Architect at cytek-security
Faster support is needed for endpoint security solutions.
We are using the automated email process for support, and they respond within an hour or two hours sometimes.
Computer Technician at VILLE DE POINTE-CLAIRE
A chat service would be beneficial.
Information Security Principal at a venture capital & private equity firm with 1,001-5,000 employees
The technical support from SentinelOne Singularity Complete is very active and good, with a strong knowledge base available online.
Cyber Consultant at a consultancy with 11-50 employees
 

Scalability Issues

Sentiment score
7.6
Microsoft Defender for Business offers scalable, cloud-driven security for diverse organizations, adaptable to various configurations and endpoint quantities.
Sentiment score
8.0
SentinelOne Singularity Complete offers scalable endpoint protection for all business sizes, ensuring seamless integration and minimal maintenance needs.
The cloud-based nature of the solution ensures high scalability.
Solution Consultant at BIM Group of Companies
The scalability of Microsoft Defender for Business is rated as ten, indicating it is very scalable.
Consultant at Dell Technologies
In terms of scalability, I would rate Microsoft Defender for Business a ten.
Public Cloud Engineer at Prudential
It's all auto-scale and auto-categorized, configuring automatically.
AGM IT Security at Page Industries Ltd
SentinelOne Singularity Complete is very scalable.
DGM. Technical Security at a tech services company with 10,001+ employees
My deployment is relatively small, and SentinelOne Singularity Complete works within those constraints.
Director, Information Technology at Premier Realty Group
 

Stability Issues

Sentiment score
7.2
Microsoft Defender for Business is highly rated for stability, despite minor errors and complexity issues not significantly impacting confidence.
Sentiment score
7.9
SentinelOne Singularity offers stable performance with minimal downtime, few disruptions, and low resource use, despite occasional minor issues.
No customer complaints about its functionality or reliability.
Solution Consultant at BIM Group of Companies
Although it generally works, there are occasional issues and errors that sometimes require a complete system format to rectify.
I would rate the stability of Microsoft Defender for Business with a three out of ten, where one is very bad.
Public Cloud Engineer at Prudential
This indicates room for improvement in stability when interacting with other solutions.
Director, Information Technology at Premier Realty Group
Initially, there were issues, particularly on the management side, but now the console is much more stable.
Information Security Principal at a venture capital & private equity firm with 1,001-5,000 employees
Everything is managed automatically, so there is no user interference needed for upgrades.
DGM. Technical Security at a tech services company with 10,001+ employees
 

Room For Improvement

Microsoft Defender for Business needs improved reporting, threat protection, support, and integration, with attention to pricing and update communication.
SentinelOne Singularity Complete requires interface upgrades and improved functionality in reporting, support, pricing, and integration for better user experience.
Microsoft should provide batch management solutions with the application, integrating pass management with roles.
Solution Consultant at BIM Group of Companies
Features related to Advanced Persistent Threat detection vectors and cyber kill chain integrations are not available out-of-the-box.
CISO at a financial services firm with 11-50 employees
There can be improvements in the user interface to make it more intuitive.
Information Technology Security Consultant at Navaio IT Security
The only thing that prevented the attack from succeeding was a free version of Malwarebytes.
Director, Information Technology at Premier Realty Group
Providing a single pane of visibility for the end user would be beneficial.
AGM IT Security at Page Industries Ltd
That seems to play a little havoc and can conflict with manual installs, causing issues where it wants to delete and reinstall the client.
Computer Technician at VILLE DE POINTE-CLAIRE
 

Setup Cost

Microsoft Defender for Business offers integrated security in Office 365, with competitive pricing but some note higher costs than competitors.
SentinelOne Singularity Complete offers competitive pricing, valued features, and discounts appealing to enterprise users despite higher costs.
Single-year pricing remains good.
Solution Consultant at BIM Group of Companies
The pricing is quite affordable at the enterprise level with no extra expenses noted.
Consultant at Dell Technologies
Although the cost can be slightly higher, it expedites deployment, which is beneficial, especially for startups.
CISO at a financial services firm with 11-50 employees
If you want protection, you have to pay the price.
Information Security Principal at a venture capital & private equity firm with 1,001-5,000 employees
There are other products that are less expensive, but I tell my clients that in security, they cannot cut corners or look for the cheapest solution.
President at a tech services company with 1-10 employees
Reputation and quality are important, but especially in today’s economy, price is a significant factor.
Security and Compliance at a outsourcing company with 1,001-5,000 employees
 

Valuable Features

Microsoft Defender for Business provides robust, scalable security with seamless Azure integration and effective threat management at a cost-effective price.
SentinelOne Singularity Complete offers AI-driven threat detection, rollback, comprehensive coverage, and efficient integration for robust endpoint security.
The threat detection capabilities are robust, with a dedicated research team and a continuously updated threat feed.
Information Technology Security Consultant at Navaio IT Security
Its vulnerability management is regarded as one of the best in the industry.
Solution Consultant at BIM Group of Companies
The most effective features of Microsoft Defender for Business include its threat detection and response capabilities in managing vulnerabilities and ransomware attacks.
Consultant at Dell Technologies
I have an advanced app providing visibility of all my endpoints, which was not the case before.
AGM IT Security at Page Industries Ltd
SentinelOne has a feature to decommission automatically, which has been fantastic.
Computer Technician at VILLE DE POINTE-CLAIRE
There's also automation that gives my team free time, preventing them from having to look for every alert.
Network & Security Section Head/Digital Transformation at City Edge
 

Categories and Ranking

Microsoft Defender for Busi...
Ranking in Endpoint Protection Platform (EPP)
18th
Average Rating
7.8
Reviews Sentiment
6.6
Number of Reviews
20
Ranking in other categories
Microsoft Security Suite (16th)
SentinelOne Singularity Com...
Ranking in Endpoint Protection Platform (EPP)
3rd
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
203
Ranking in other categories
Anti-Malware Tools (2nd), Endpoint Detection and Response (EDR) (2nd), Extended Detection and Response (XDR) (4th), AI Observability (4th)
 

Mindshare comparison

As of January 2026, in the Endpoint Protection Platform (EPP) category, the mindshare of Microsoft Defender for Business is 2.0%, up from 1.9% compared to the previous year. The mindshare of SentinelOne Singularity Complete is 4.3%, up from 4.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Endpoint Protection Platform (EPP) Market Share Distribution
ProductMarket Share (%)
SentinelOne Singularity Complete4.3%
Microsoft Defender for Business2.0%
Other93.7%
Endpoint Protection Platform (EPP)
 

Featured Reviews

Takayuki-Umehara - PeerSpot reviewer
Public Cloud Engineer at Prudential
Product deployment protects assets but needs improvement in system support
I am doing maintenance for Microsoft Defender for Business, and I'm currently working with it. We don't need to use the latest version of Microsoft Defender for Business. We still use the latest virus definition file that Microsoft Defender for Business has automatically updated. We implement a basic update mechanism. Our compliance division manages how many servers and PCs we have and whether those servers have antivirus solutions. I am not certain about how Microsoft Defender for Business helps with AI-driven security strategies. I just use it normally and don't know if it uses AI technology. I rate Microsoft Defender for Business a six out of ten.
Daniel Giacomelli - PeerSpot reviewer
Security and Compliance at a outsourcing company with 1,001-5,000 employees
Strengthens cross-platform threat response while supporting audit compliance and log integration
The analytics and reporting can be a bit overwhelming. I love the dashboards, but I find that I need to better understand PowerQuery—specifically when to turn it on and off and its limitations. It's similar to SharePoint in that regard. As a former SharePoint instructor, I know it like the back of my hand. The best thing about SharePoint is that it can do whatever you want; the worst part is also that it can do whatever you want. You really need to know what you want before diving in. Most people usually have a good idea of what they need. SharePoint offers a lot out of the box, but you can customize it further if you wish. However, customization often requires hiring someone, which can be risky since you never know if it will work as intended. On the other hand, PowerQuery can help bridge some of those gaps within Singularity. The challenge arises when you want to incorporate what you've done into dashboards and charts, as there are limitations. For instance, I want more clickable drill-down options that allow me to filter on specific sections of the data, but that's currently not possible. It’s not to say that improvements won’t come in the future; it's just that it feels a bit early at this stage. Additionally, I find some navigation features frustrating, like the back button in certain contexts. For example, if you open PowerQuery from a chart, it doesn't open in a new window or tab. Clicking the back button takes you all the way back to the previous state, causing you to lose whatever progress you made. However, I'm actively providing this feedback to my partner, Pro Circular, through whom we access SentinelOne. They take our input seriously, and I've been sharing my observations. They have their own views but are addressing the issues I raise. It's good to see that suggestions occasionally lead to updates and improvements.
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Top Industries

By visitors reading reviews
Computer Software Company
17%
Comms Service Provider
8%
Government
6%
Financial Services Firm
6%
Computer Software Company
13%
Manufacturing Company
9%
Financial Services Firm
8%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise2
Large Enterprise4
By reviewers
Company SizeCount
Small Business87
Midsize Enterprise44
Large Enterprise76
 

Questions from the Community

What is your experience regarding pricing and costs for Microsoft Defender for Business?
Our thoughts on the pricing for Microsoft Defender for Business are that we wish it could be better. If the pricing was a little better, we would definitely increase what we currently have.
What needs improvement with Microsoft Defender for Business?
I see room for improvement in Microsoft Defender for Business, particularly regarding the consolidation of all security solutions in one place and the integration of AI and data security into the s...
Cortex XDR by Palo Alto vs. Sentinel One
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Which is better - SentinelOne or Darktrace?
Which solution is better depends on which is more suitable specifically for your company. Darktrace, for example, is meant for smaller to medium-sized businesses. It is also a good option for organ...
 

Also Known As

No data available
Sentinel Labs, SentinelOne Singularity
 

Overview

 

Sample Customers

Information Not Available
Havas, Flex, Estee Lauder, McKesson, Norfolk Southern, JetBlue, Norwegian airlines, TGI Friday, AVX, Fim Bank
Find out what your peers are saying about Microsoft Defender for Business vs. SentinelOne Singularity Complete and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.