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Microsoft Defender for Office 365 vs Microsoft Purview Information Protection 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
6.6
Microsoft Purview protects data, ensures compliance, saves costs through security, offers peace of mind with automation and centralization benefits.
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
Purview can do a quick scan, and it doesn't use human resources, so it gets time to do things that we need humans to focus on.
Mgr Data Engineering at Avanade
The E5 license comes with different solutions like data discovery classification, CASB, DLP solutions, and Defender for Cloud.
Associate Director at LTI - Larsen & Toubro Infotech
The cost of data loss and your data going to a competitor is potentially massive.
Client Experience Officer at 1234 Micro Technologies
 

Customer Service

Sentiment score
5.7
Microsoft Defender for Office 365 users rate support highly, praising its responsiveness and 24/7 availability, despite occasional documentation and communication issues.
Sentiment score
4.3
Microsoft Purview's support experiences vary, with mixed reviews on response times and knowledgeability; improvement noted in community engagement.
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
Sometimes, I get a fast and knowledgeable response, while other times, I've experienced delays and received no resolution.
Client Experience Officer at 1234 Micro Technologies
It's hard to be an ambassador for a product when you know it will be hard to get support.
Mgr Data Engineering at Avanade
After our issues are reported, it takes a long time to find a resolution.
Director Security Architecture at a financial services firm with 5,001-10,000 employees
 

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
6.3
Microsoft Purview Information Protection scales efficiently, supporting millions of documents, though improvements in data ingestion speed are needed.
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
It can be scaled across different departments organization-wide very quickly and easily.
Client Experience Officer at 1234 Micro Technologies
It can handle large collections of data without issues.
Mgr Data Engineering at Avanade
Scalability can be improved by reducing these intervals.
Information Technology Senior Expert at Garanti Teknoloji
 

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
7.1
Microsoft Purview Information Protection is reliable and performs well at scale, with minor issues and occasional performance lags.
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
Once implemented, I haven't had issues with its consistency.
Client Experience Officer at 1234 Micro Technologies
The product is stable, and whatever it does, it does better than any other thing.
Associate Director at LTI - Larsen & Toubro Infotech
Since identity is where everything is based, if that goes down, you're screwed.
Director, Network & Cloud Infrastructure at a legal firm with 501-1,000 employees
 

Room For Improvement

Users call for enhanced virus detection, cross-platform support, and pricing transparency in Microsoft Defender for Office 365.
Microsoft Purview needs better integration, affordability, detection, labeling, and clearer features to improve AI integration and user satisfaction.
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
Effectiveness in Microsoft Purview Information Protection means enforcing the policy and making sure it works consistently across non-Microsoft products as well.
Director Security Architecture at a financial services firm with 5,001-10,000 employees
A lot of functionality in Microsoft Purview Information Protection is not exposed in an API officially yet, which has made a lot of implementation work difficult because we have to do click ops instead of DevOps.
CEO at Blue Cycle
Having a roadmap or updates about new releases would be helpful for demonstrating to clients.
Client Experience Officer at 1234 Micro Technologies
 

Setup Cost

Microsoft Defender for Office 365 pricing is seen as flexible but potentially expensive, offering value in comprehensive security features.
Microsoft Purview Information Protection offers competitive pricing within Microsoft's ecosystem, despite its complexity and need for clarity on add-ons.
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 talked to people who had compared it to other products on the market, and they're spending five figures to get started.
Mgr Data Engineering at Avanade
The E5 license covers most of the solutions for different technologies, so that way, it is good and more affordable compared to any other solution.
Associate Director at LTI - Larsen & Toubro Infotech
Our focus is on helping customers maximize their software investment.
Business Development Manager, Transformational Services at Dell Technologies
 

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 ensures easy deployment, AI-enhanced data protection, and compliance with HIPAA and GDPR through automated labeling and DLP policies.
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 Copilot is an advantage because it's enterprise-grade AI.
Business Development Manager, Transformational Services at Dell Technologies
It's paramount to have a single solution for information protection.
Client Experience Officer at 1234 Micro Technologies
Regardless of the education, the employee might share the information anyway, so the AI shouldn't be the first point of failure. It should be a human making good decisions.
Mgr Data Engineering at Avanade
 

Categories and Ranking

Microsoft Defender for Offi...
Ranking in Microsoft Security Suite
9th
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
61
Ranking in other categories
Email Archiving (1st), Email Security (2nd), Advanced Threat Protection (ATP) (2nd), Secure Email Gateway (SEG) (1st)
Microsoft Purview Informati...
Ranking in Microsoft Security Suite
13th
Average Rating
8.0
Reviews Sentiment
6.2
Number of Reviews
22
Ranking in other categories
Data Governance (7th), Data Privacy Management Software (3rd)
 

Mindshare comparison

As of March 2026, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Office 365 is 3.7%, up from 2.3% compared to the previous year. The mindshare of Microsoft Purview Information Protection is 2.0%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3653.7%
Microsoft Purview Information Protection2.0%
Other94.3%
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.
Abhi T - PeerSpot reviewer
Associate Director at LTI - Larsen & Toubro Infotech
Achieve comprehensive data protection with reliable performance and room for enhanced discovery accuracy
The product is still in a growing phase. I could see that many use cases in their product are not capable enough in terms of detecting or protecting. Compared to other products, they are in the middle of bringing their solution up to the mark, so it is not a full-grown solution. They have to get more accurate results in terms of data discovery and classification. The second thing is their support; support from Microsoft takes a lot of time to get a response from their support team. The third thing is their OCR capability is not that great in terms of identifying the documents. We would love to see response times of less than 24 hours. Additionally, there is no way to check the policy's current status in terms of whether it got synced or not. You have to wait and test the use cases after 24 hours or after 48 hours, and once it starts working, then it appears the policy got implemented.
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
6%
Financial Services Firm
16%
Computer Software Company
11%
Retailer
7%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise10
Large Enterprise31
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise4
Large Enterprise14
 

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 Information Protection?
It is reasonable from what I can say right now because we are using most of the Microsoft tools right now. We are using the managed SQL server of Microsoft. We are using Microsoft Purview Informati...
What needs improvement with Microsoft Purview Information Protection?
One thing I personally felt is, let's take a use case where I want to know how many crimes Mr. Donald Trump has made in this organization. That kind of information we don't have in our systems. I'm...
What is your primary use case for Microsoft Purview Information Protection?
We are more focused on data quality and master data management perspective. From that angle, things are quite easy and good. In terms of AI integration or integrating with a third-party tool like I...
 

Also Known As

MS Defender for Office 365
Microsoft Information Protection
 

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 Information Protection and other solutions. Updated: February 2026.
884,976 professionals have used our research since 2012.