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Microsoft Defender for Business 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
7.5
Microsoft Defender boosts productivity and security, integrating seamlessly with Office tools for significant budget savings despite ROI challenges.
Sentiment score
7.2
Microsoft Defender for Office 365 enhances email protection, reduces costs, and increases productivity, offering invaluable data security.
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.
It is pretty good because it offers various features such as Exchange, OfficeSuite, OneDrive, and SharePoint.
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.
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.
 

Customer Service

Sentiment score
5.2
Users have mixed reviews of Microsoft Defender's support, noting contact difficulties and inconsistent technical assistance despite good onboarding.
Sentiment score
7.0
Microsoft Defender for Office 365 offers reliable support, praised for responsiveness, despite some challenges with clarity and third-party resolutions.
It is rated ten out of ten for its quality and assistance.
The onboarding support is exceptional, ensuring seamless integration and implementation.
Faster support is needed for endpoint security solutions.
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.
 

Scalability Issues

Sentiment score
8.2
Microsoft Defender for Business is scalable and effective across diverse environments, though special configurations might impact growth speed.
Sentiment score
8.2
Microsoft Defender for Office 365 scales seamlessly across configurations, supporting thousands of users with effortless integration and optimal performance.
The cloud-based nature of the solution ensures high scalability.
The scalability of Microsoft Defender for Business is rated as ten, indicating it is very scalable.
In terms of scalability, I would rate Microsoft Defender for Business a 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
7.3
Microsoft Defender for Business is stable and reliable, with minimal crashes, but some report occasional bugs impacting stability.
Sentiment score
7.7
Microsoft Defender for Office 365 is highly reliable, offering stable performance, quick issue resolution, and high user satisfaction ratings.
No customer complaints about its functionality or reliability.
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.
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.
 

Room For Improvement

Microsoft Defender for Business needs better reporting, integration, simplified interface, and enhanced features to address various limitations and concerns.
Microsoft Defender for Office 365 needs enhanced virus protection, compatibility, UI, integration, reporting, and cost transparency to improve user experience.
Microsoft should provide batch management solutions with the application, integrating pass management with roles.
Features related to Advanced Persistent Threat detection vectors and cyber kill chain integrations are not available out-of-the-box.
There can be improvements in the user interface to make it more intuitive.
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.
 

Setup Cost

Microsoft Defender for Business offers competitive pricing with enterprise value, though some users find costs high compared to competitors.
Enterprise users find Microsoft Defender for Office 365 pricing complex but valuable due to integration with Office 365 features.
Single-year pricing remains good.
The pricing is quite affordable at the enterprise level with no extra expenses noted.
The package with Business Premium is good for what you get for the price.
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.
 

Valuable Features

Microsoft Defender for Business integrates seamlessly with Microsoft products, offering comprehensive security, scalability, and user-friendly features for effective threat management.
Microsoft Defender for Office 365 offers comprehensive security with real-time updates and automated threat response, enhancing multi-platform enterprise safety.
The threat detection capabilities are robust, with a dedicated research team and a continuously updated threat feed.
Its vulnerability management is regarded as one of the best in the industry.
The most effective features of Microsoft Defender for Business include its threat detection and response capabilities in managing vulnerabilities and ransomware attacks.
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.
 

Categories and Ranking

Microsoft Defender for Busi...
Ranking in Microsoft Security Suite
16th
Average Rating
7.8
Reviews Sentiment
7.0
Number of Reviews
19
Ranking in other categories
Endpoint Protection Platform (EPP) (23rd)
Microsoft Defender for Offi...
Ranking in Microsoft Security Suite
10th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
52
Ranking in other categories
Email Archiving (1st), Email Security (1st), Advanced Threat Protection (ATP) (2nd), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of June 2025, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Business is 3.0%, up from 3.0% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 2.6%, up from 2.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite
 

Featured Reviews

Syed Abid  - PeerSpot reviewer
Advanced threat protection secures diverse workloads with cost-effective deployment
If I need logs and don't have local storage bundled with Defender, I need to add workspace and log analytics, which is costly for storing logs of 2 GB, 5 GB, 10 GB. A default storage of 5 GB for logs should be included with Defender. There are limitations in whitelisting folders and files, and the whitelisting feature for Defender threat protection was deprecated. A straightforward feature for this should be added.
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.
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Top Industries

By visitors reading reviews
Computer Software Company
19%
Comms Service Provider
8%
Retailer
7%
Government
6%
Computer Software Company
16%
Financial Services Firm
9%
Manufacturing Company
8%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Microsoft Defender for Business?
A few things are valuable. One is the alerting we see when any kind of intrusion is happening, any kind of malware is being deployed across the endpoints, or any kind of suspicious activity is goin...
What is your experience regarding pricing and costs for Microsoft Defender for Business?
Microsoft Defender for Business offers the best pricing option in the market and is very cost-effective.
What needs improvement with Microsoft Defender for Business?
The areas where Microsoft Defender for Business could improve include the support, installation process, and wiki. I should be able to find solutions to issues quickly without having to delve too d...
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...
 

Also Known As

No data available
MS Defender for Office 365
 

Overview

 

Sample Customers

Information Not Available
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Microsoft Defender for Business vs. Microsoft Defender for Office 365 and other solutions. Updated: April 2025.
856,873 professionals have used our research since 2012.