Try our new research platform with insights from 80,000+ expert users

Microsoft Defender for Office 365 vs Microsoft Purview Compliance Manager 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
6.9
Microsoft Defender for Office 365 offers strong ROI through security enhancements, cost savings, and improved company productivity despite measurement challenges.
Sentiment score
6.4
Microsoft Purview Compliance Manager enhances ROI by reducing costs, process times, and improving security with no extra fees.
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
The process is reduced from weeks to a day, showcasing a solid nine for return on investment.
Head of Technology Operations at Pobl Group
 

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
5.0
Microsoft Purview Compliance Manager's support needs improvement with slow response times, inconsistent support, and insufficient training resources.
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
Since I approach them with more complicated issues, it takes quite a bit of time to get through those two support tiers.
Senior security analyst at MB Cybermode
The support staff, who are often outsourced, seem not adequately equipped to handle issues quickly and efficiently.
Information Technology Auditor at a retailer with 10,001+ employees
The quality of support is affected because most support staff seem focused on obtaining five-star ratings rather than resolving problems thoroughly.
System Administrator at Templars
 

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
6.8
Microsoft Purview Compliance Manager offers scalable compliance management, adaptable to expanding needs, though policy granularity can sometimes be limited.
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
As services increase, eDiscovery capabilities also increase, allowing easy deployment.
Digital Forensic Investigator at Los Angeles Unified School District
It is straightforward since it scans everything, covering all aspects needed in our operations.
Head of Technology Operations at Pobl Group
While the solution is scalable in terms of user numbers, there are limitations when creating more granular level policies.
Information Technology Auditor at a retailer with 10,001+ 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
7.8
Microsoft Purview Compliance Manager is stable and reliable, though could improve in user-friendliness and competitiveness in eDiscovery tools.
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
Despite stability, it needs to be more user-friendly and competitive compared to other eDiscovery tools.
Digital Forensic Investigator at Los Angeles Unified School District
It is reliable and I can depend on it.
Head of Technology Operations at Pobl Group
In terms of latency, stability is not an issue.
Information Technology Auditor at a retailer with 10,001+ employees
 

Room For Improvement

Users call for enhanced virus detection, cross-platform support, and pricing transparency in Microsoft Defender for Office 365.
Microsoft Purview Compliance Manager requires better integration, automation, accessibility, and expanded functionality; users seek improved interface and budget-friendly licensing.
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
Microsoft Copilot Security converts human language to search queries using its AdLM language model.
Digital Forensic Investigator at Los Angeles Unified School District
The speed and accessibility, particularly in the user interface, require significant work.
Senior security analyst at MB Cybermode
The Purview Compliance Portal's log management could be more user-friendly, making data retrieval, like email logs, challenging.
Information Technology Auditor at a retailer with 10,001+ employees
 

Setup Cost

Microsoft Defender for Office 365 pricing is seen as flexible but potentially expensive, offering value in comprehensive security features.
Microsoft Purview Compliance Manager is cost-effective, especially for Microsoft 365 E5 users, offering competitive pricing with strong compliance benefits.
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
I rate the pricing as a one since it is included in what I am already paying for, as part of the Microsoft 365 E5 licensing.
Head of Technology Operations at Pobl Group
Microsoft Purview Compliance Manager is priced at 60% to 70% compared to some competitors.
Information Technology Auditor at a retailer with 10,001+ employees
It was not excessively expensive.
Systems Engineer at a leisure / travel company with 201-500 employees
 

Valuable Features

Microsoft Defender for Office 365 enhances email security with anti-phishing, anti-malware, threat intelligence, and seamless integration for efficient management.
Microsoft Purview Compliance Manager streamlines compliance with integrated tools, automation, and dashboards, enhancing security and efficiency across platforms.
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
Microsoft Purview Compliance Manager's eDiscovery is essential for organizations using Outlook as their email service.
Digital Forensic Investigator at Los Angeles Unified School District
The most valuable feature is data classification retention since I deal with terabytes of data, and managing and monitoring it simplifies the process.
Head of Technology Operations at Pobl Group
The best aspect is that it requires little to no time for implementation if I am using all of Microsoft's tools.
Senior security analyst at MB Cybermode
 

Categories and Ranking

Microsoft Defender for Offi...
Ranking in Microsoft Security Suite
10th
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), Secure Email Gateway (SEG) (1st)
Microsoft Purview Complianc...
Ranking in Microsoft Security Suite
23rd
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
10
Ranking in other categories
Data Governance (17th)
 

Mindshare comparison

As of January 2026, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Office 365 is 3.6%, up from 2.4% compared to the previous year. The mindshare of Microsoft Purview Compliance Manager is 1.6%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite Market Share Distribution
ProductMarket Share (%)
Microsoft Defender for Office 3653.6%
Microsoft Purview Compliance Manager1.6%
Other94.8%
Microsoft Security Suite
 

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.
AO
System Administrator at Templars
Opportunities for improvement overshadow benefits
Microsoft support is great overall. However, their business model of outsourcing to third-party partners, especially in Nigeria with tech experts and other partners, needs improvement. I have raised tickets and worked with these support teams. Microsoft needs to address how partners treat their technical support staff. The quality of support is affected because most support staff seem focused on obtaining five-star ratings rather than resolving problems thoroughly. This appears to be due to the pressure from partners and Microsoft's feedback metrics system. They often rush to close tickets without deeply investigating complaints. From the level of support received, I usually try to resolve issues independently. I rate the engineers favorably understanding their pressures, even when issues remain unresolved. Overall, I would rate Microsoft Support five out of 10.
report
Use our free recommendation engine to learn which Microsoft Security Suite solutions are best for your needs.
881,114 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
Computer Software Company
11%
Healthcare Company
8%
Financial Services Firm
8%
Government
8%
 

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 Business3
Midsize Enterprise3
Large Enterprise4
 

Questions from the Community

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 is your primary use case for Microsoft Defender for Office 365?
My use case for Microsoft Defender for Office 365 is for email protection, safe links, protection of links, documents, protecting my documents, and protecting attachments. I also use it to conduct ...
What is your experience regarding pricing and costs for Microsoft Purview Compliance Manager?
While not cheap, Microsoft Purview Compliance Manager is priced at 60% to 70% compared to some competitors. Additional costs may involve OCR page scanning.
What is your primary use case for Microsoft Purview Compliance Manager?
When I tried to set up Microsoft Purview Compliance Manager for my organization to ensure people are not sending PII documents, especially payment cards, using keywords for flagging, it disrupted o...
What advice do you have for others considering Microsoft Purview Compliance Manager?
I have limited experience with the templates in Microsoft Purview Compliance Manager. Our organization hasn't fully utilized the solution beyond checking compliance scores and adjusting basic setti...
 

Also Known As

MS Defender for Office 365
Microsoft Compliance Manager
 

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. Microsoft Purview Compliance Manager and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.