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Microsoft Defender for Identity vs Microsoft Defender for Office 365 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
6.7
Microsoft Defender for Identity improves incident management, reduces costs, enhances ROI, and saves time despite unclear financial benefits.
Sentiment score
7.2
Microsoft Defender for Office 365 enhances email protection, reduces costs, and increases productivity, offering invaluable data security.
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
8.4
Microsoft Defender for Identity's support receives mixed feedback, with users praising premium service but noting poorer lower-tier support responses.
Sentiment score
7.0
Microsoft Defender for Office 365 offers reliable support, praised for responsiveness, despite some challenges with clarity and third-party resolutions.
Generally, the support is more effective than other providers like Oracle.
The quality of support is very good, but troubleshooting can take time due to complex setups and the need to provide many logs.
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
8.6
Microsoft Defender for Identity is scalable, efficiently supports large networks, and integrates well into Microsoft-centric environments with minimal effort.
Sentiment score
8.2
Microsoft Defender for Office 365 scales seamlessly across configurations, supporting thousands of users with effortless integration and optimal performance.
In a Microsoft-centric organization, especially with Azure infrastructure and Office 365, Microsoft Defender for Identity is scalable.
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
7.8
Microsoft Defender for Identity is stable and reliable, though occasional sensor restarts occur, generally scoring 6-9/10 in stability.
Sentiment score
7.7
Microsoft Defender for Office 365 is highly reliable, offering stable performance, quick issue resolution, and high user satisfaction ratings.
Microsoft Defender for Identity is quite robust and built on Azure hyperscale infrastructure, with a 99% availability.
Having recently started using it, reliability is affirmed, but manual investigation is often performed to verify if alerts identified by auto-remediation are accurate.
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 Identity needs better integration, usability, and support, with improved detection and cost efficiency highlighted by users.
Microsoft Defender for Office 365 needs enhanced virus protection, compatibility, UI, integration, reporting, and cost transparency to improve user experience.
If Microsoft could develop a feature that indicates when impossible travel is caused by VPN connections, it would prevent unnecessary password resets and session disruptions, especially for VIP users in organizations.
One improvement I would recommend is the integration of an admin application within Teams, allowing easy access to attack information on a mobile platform.
Reducing false positives is something we've been working on with Microsoft.
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 Identity is cost-effective within E5, offering flexibility compared to standalone purchases or E3 add-ons.
Enterprise users find Microsoft Defender for Office 365 pricing complex but valuable due to integration with Office 365 features.
If they can reduce the costs, organizations will be happy, and it will compensate for using the Azure environment, which is more expensive on the infrastructure as a service side.
Ensuring a fair price according to market standards.
From an organization perspective, using E5 licenses is value for money, especially if Azure and Office 365 are already in use.
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 Identity excels in integration, real-time detection, privilege management, AI analytics, and comprehensive security monitoring features.
Microsoft Defender for Office 365 offers comprehensive security with real-time updates and automated threat response, enhancing multi-platform enterprise safety.
We receive an advance report of risky users, allowing us to take preemptive action before an attack causes damage to organization details.
The most valuable feature is its hybrid artificial intelligence, which gathers forensic data to track and counteract security threats, much like the CSI series in effect.
The advanced threat protection is one of the strengths of Microsoft Defender for Identity, as it utilizes user and entity analytics and can detect indicative 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 Iden...
Ranking in Advanced Threat Protection (ATP)
5th
Ranking in Microsoft Security Suite
5th
Average Rating
8.8
Reviews Sentiment
7.4
Number of Reviews
23
Ranking in other categories
Identity Threat Detection and Response (ITDR) (3rd)
Microsoft Defender for Offi...
Ranking in Advanced Threat Protection (ATP)
2nd
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), Secure Email Gateway (SEG) (1st)
 

Mindshare comparison

As of June 2025, in the Advanced Threat Protection (ATP) category, the mindshare of Microsoft Defender for Identity is 7.1%, down from 8.0% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 8.7%, down from 14.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Advanced Threat Protection (ATP)
 

Featured Reviews

ROBERT-CHRISTIAN - PeerSpot reviewer
Integration within the ecosystem enhances collaboration and automates functionalities
The integration into the Microsoft Defender ecosystem is the most valuable feature of Microsoft Defender for Identity. It fits very nicely with all the other Defender tools, allowing for excellent collaboration among them. It also fits seamlessly into Microsoft Sentinel SIEM. Furthermore, Microsoft security solutions can save time as they allow the automation of numerous functionalities, and the reporting inside the Microsoft ecosystem is commendable.
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
15%
Financial Services Firm
13%
Government
7%
Manufacturing Company
7%
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 Identity?
Microsoft Defender for Identity provides excellent visibility into threats by leveraging real-time analytics and data intelligence.
What needs improvement with Microsoft Defender for Identity?
In Microsoft Defender for Identity, I would appreciate improvements in providing information on conditional access. They have added more control that can be put in place, which was not present year...
What is your primary use case for Microsoft Defender for Identity?
The main use cases for Microsoft Defender for Identity involve working with security and signing risk aspects. I work with conditional access, though I have not implemented this task yet.
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

Azure Advanced Threat Protection, Azure ATP, MS Defender for Identity
MS Defender for Office 365
 

Overview

 

Sample Customers

Microsoft Defender for Identity is trusted by companies such as St. Luke’s University Health Network, Ansell, and more.
Microsoft Defender for Office 365 is trusted by companies such as Ithaca College.
Find out what your peers are saying about Microsoft Defender for Identity vs. Microsoft Defender for Office 365 and other solutions. Updated: May 2025.
856,873 professionals have used our research since 2012.