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Microsoft Defender Threat Intelligence [EOL] vs Microsoft Defender for Office 365 comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 16, 2025

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
6.9
Microsoft Defender for Office 365 offers strong ROI through security enhancements, cost savings, and improved company productivity despite measurement challenges.
Sentiment score
8.2
Microsoft Defender Threat Intelligence enhances security, saves on budgets, and improves detection, offering significant ROI and value.
It has also decreased our time to detection and response by about 15 to 20 percent.
Technology support manager at Alfred State College
Overall, cost of owning and operating our system goes down.
Designation Chief Consultant at Avtow
It's hard to quantify the return on investment we've seen from Microsoft Defender for Office 365.
Chief Architect at a tech vendor with 1,001-5,000 employees
It's a value-for-money product.
Mobility & IT Project Manager at Voicevine Pty Ltd
 

Customer Service

Sentiment score
5.8
Microsoft Defender for Office 365 users rate support highly, praising its responsiveness and 24/7 availability, despite occasional documentation and communication issues.
Sentiment score
7.5
Microsoft Defender support is rated very good, with knowledgeable level two assistance, competent partners, and a helpful community platform.
Over the past two years, there have been no critical problems.
Solution Consultant at BIM Group of Companies
we opened tickets, and they typically resolve them quickly.
Chief Architect at a tech vendor with 1,001-5,000 employees
With a subscription for Microsoft Defender for Office 365, it is an eight. Without it, it is a six.
Manager at a tech services company with 10,001+ employees
Level two support is knowledgeable and knows how the product works, which is very good.
Cloud Solution architect at a tech services company with 51-200 employees
I would give Microsoft an eight for their technical support.
Mobility & IT Project Manager at Voicevine Pty Ltd
 

Scalability Issues

Sentiment score
7.8
Microsoft Defender for Office 365 offers scalable, efficient protection for large enterprises, ensuring seamless growth across diverse industries.
Sentiment score
7.4
Microsoft Defender Threat Intelligence is highly scalable, adaptable for businesses of all sizes, and supports thousands of endpoints efficiently.
We have never faced scalability problems, and Microsoft manages it effectively.
Solution Consultant at BIM Group of Companies
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.
Chief Architect at a tech vendor with 1,001-5,000 employees
Microsoft Defender for Office 365 scales with the growing needs of my company well.
Senior Client Director and Advisory Service Leader at Crossfuze
If there were some customizations available, I would rate its scalability as nine out of ten.
Cloud Solution architect at a tech services company with 51-200 employees
 

Stability Issues

Sentiment score
7.7
Microsoft Defender for Office 365 provides 99.9% uptime with minor issues, ensuring reliable performance and seamless cloud integration.
Sentiment score
8.0
Microsoft Defender Threat Intelligence is seen as stable and secure, with high reliability and effective phishing prevention despite occasional outages.
I would rate the stability of Microsoft Defender for Office 365 as 10 over 10 because it's highly available, it works, and it does the job it is meant to do.
Cloud Solutions Architect at a tech services company with 201-500 employees
I have not experienced any downtime, crashes, or performance issues because of Defender.
Technology Associate at a financial services firm with 51-200 employees
The solution is stable, as we have been using it for the past two years.
Solution Consultant at BIM Group of Companies
It provides a high level of security and avoids phishing and scam emails.
Cloud Solution architect at a tech services company with 51-200 employees
 

Room For Improvement

Users call for enhanced virus detection, cross-platform support, and pricing transparency in Microsoft Defender for Office 365.
Microsoft Defender needs price adjustments, improved integration, better accuracy, enhanced AI, and smoother user experience for evolving cybersecurity.
The main area for improvement is simplifying the implementation and rollout process.
Infrastructure and Security Lead at Vedanta
Microsoft could improve by offering recommendations for domain spoofing attacks, especially scenarios where DNS records like SPF, DKIM, and DMARC are not properly published.
Solution Consultant at BIM Group of Companies
There is a different console for different things; I just want one consolidated console.
Senior Director, Security Architecture & Engineering at a leisure / travel company with 10,001+ employees
Providing code customization would help keep pace with new vulnerabilities and threats.
Cloud Solution architect at a tech services company with 51-200 employees
The main area of improvement for Microsoft Defender Threat Intelligence is related to how information is conveyed.
Mobility & IT Project Manager at Voicevine Pty Ltd
From the telemetry data standpoint, I would prefer Defender data to be more open in future updates.
Consultant at Dell Technologies
 

Setup Cost

Microsoft Defender for Office 365 pricing is seen as flexible but potentially expensive, offering value in comprehensive security features.
Microsoft Defender Threat Intelligence is cost-effective in bundles, but SMEs face challenges with standalone pricing and evolving licensing.
We've likely saved 30% of costs.
Designation Chief Consultant at Avtow
Money-wise, it is a part of the Office 365 suite, making it slightly more expensive compared to Trend Micro.
Infrastructure and Security Lead at Vedanta
Microsoft is quite affordable with a lot of features available for any size organization.
Solution Consultant at BIM Group of Companies
 

Valuable Features

Microsoft Defender for Office 365 enhances email security with anti-phishing, anti-malware, threat intelligence, and seamless integration for efficient management.
Microsoft Defender Threat Intelligence excels in integration, threat detection, user interface, data retention, real-time protection, and analytics.
It ranks the threats and allows us to prioritize those hitting us the hardest, such as email threats.
Technology support manager at Alfred State College
It provides end-to-end visibility on email threats such as phishing, extending beyond Exchange Online Protection.
Solution Consultant at BIM Group of Companies
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.
Chief Architect at a tech vendor with 1,001-5,000 employees
If it wasn't for that real-time threat detection on the vulnerability, I think we would not have survived the attack.
Mobility & IT Project Manager at Voicevine Pty Ltd
One of the best features is that it provides a certain level of customization, allowing us to set our spam confidence levels.
Cloud Solution architect at a tech services company with 51-200 employees
Our threat detection is enhanced due to the AI agents in Microsoft Defender Threat Intelligence, which helps in detecting automatically.
Consultant at Dell Technologies
 

Categories and Ranking

Microsoft Defender for Offi...
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
60
Ranking in other categories
Email Archiving (1st), Email Security (1st), Advanced Threat Protection (ATP) (2nd), Microsoft Security Suite (10th), Secure Email Gateway (SEG) (1st)
Microsoft Defender Threat I...
Average Rating
8.4
Reviews Sentiment
7.3
Number of Reviews
32
Ranking in other categories
No ranking in other categories
 

Featured Reviews

Emeka Ndulu - PeerSpot reviewer
Cloud Solutions Architect at a tech services company with 201-500 employees
Improves threat visibility and response while reducing manual tasks and training users against phishing
I appreciate the attack simulation feature whereby I get to train users and educate them on how to identify phishing emails and spam emails, as well as the anti-spam protection. It gives me visibility into my threat environment and threat landscape to ensure that I am one step ahead of any likelihood of threats within my environment. I get to detect it and respond, so the threat intelligence is very effective. Microsoft security solutions save my time. It saves money because once I protect my environment, I don't lose money. It has decreased my detection time and my time to respond.
Charles Mokoena - PeerSpot reviewer
Mobility & IT Project Manager at Voicevine Pty Ltd
Has strengthened our ability to detect threats in real time and improved internal security decision-making
The features that I find most valuable in Microsoft Defender Threat Intelligence include the Sentinel part of it. There are several features we've looked at, including Sentinel as well as extended Defender, which is XDR. I've used those two, and that's what I've found quite useful for us, especially in the hardening and analysis part of the whole threat analysis. We use the real-time threat detection features in Microsoft Defender Threat Intelligence. If it wasn't for that real-time threat detection on the vulnerability, I think we would not have survived the attack. The integration capabilities of Microsoft Defender Threat Intelligence with other Microsoft security tools have benefited our organization's threat management process by initially being quite a challenge, especially coming from other security tools such as Fortinet and Check Point. However, once you've gotten used to it, it's quite easy and user-friendly. The dashboard, especially the threat analysis dashboard, is quite detailed in terms of providing a view of which areas in our environment need attention, making it quite useful.
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
Financial Services Firm
16%
Computer Software Company
12%
Educational Organization
10%
Manufacturing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise10
Large Enterprise31
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise2
Large Enterprise15
 

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 needs improvement with Microsoft Defender for Office 365?
The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster.
What do you like most about Microsoft Defender Threat Intelligence?
It just runs in the background. I don't have to worry about, making sure it's Intelligence. So, you know, this kind of makes it very easy, have to worry about installing. It is easy to use.
What needs improvement with Microsoft Defender Threat Intelligence?
From the telemetry data standpoint, I would prefer Defender data to be more open in future updates.
What is your primary use case for Microsoft Defender Threat Intelligence?
We have tried Microsoft Defender Threat Intelligence. I have expertise with Microsoft Defender products. I am not familiar with Microsoft Defender for IoT because we did not use that in our environ...
 

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 Palo Alto Networks, Microsoft, Fortinet and others in Advanced Threat Protection (ATP). Updated: December 2025.
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