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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
7.2
Microsoft Defender for Office 365 provides enhanced security, yielding financial savings and efficiency gains through improved threat detection and data protection.
Sentiment score
7.2
Microsoft Purview Information Protection enhances security, ensures compliance, reduces costs, and improves efficiency by automating data protection and governance.
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.
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.
The cost of data loss and your data going to a competitor is potentially massive.
It does meet the security objective of protecting the data.
 

Customer Service

Sentiment score
7.0
Microsoft Defender for Office 365 generally offers efficient support, but improvements in responsiveness and handling complex scenarios are desired.
Sentiment score
4.7
Users report mixed customer service experiences with Microsoft Purview, noting slow response times and inadequate communication despite some improvements.
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.
Sometimes, I get a fast and knowledgeable response, while other times, I've experienced delays and received no resolution.
It's hard to be an ambassador for a product when you know it will be hard to get support.
After our issues are reported, it takes a long time to find a resolution.
 

Scalability Issues

Sentiment score
8.2
Microsoft Defender for Office 365 excels in scalability, accommodating any organization size with efficient cloud-based performance and seamless updates.
Sentiment score
7.4
Microsoft Purview Information Protection is scalable for large workloads, but speed and policy update intervals could be improved.
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.
It can be scaled across different departments organization-wide very quickly and easily.
It can handle large collections of data without issues.
Scalability can be improved by reducing these intervals.
 

Stability Issues

Sentiment score
7.7
Microsoft Defender for Office 365 boasts 99.9% availability, resolving issues quickly, with users rating its reliability highly.
Sentiment score
7.4
Purview remains reliable and stable, performing well at scale with minor issues and continuous upgrades through its SaaS model.
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.
Once implemented, I haven't had issues with its consistency.
The solution is stable overall.
 

Room For Improvement

Microsoft Defender for Office 365 requires enhancements in virus-blocking, compatibility, integration, phishing detection, and global support.
Microsoft Purview Information Protection needs enhancements in integration, affordability, reporting, AI, feature reintroduction, and comprehensive data protection.
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.
Effectiveness in Microsoft Purview Information Protection means enforcing the policy and making sure it works consistently across non-Microsoft products as well.
Having a roadmap or updates about new releases would be helpful for demonstrating to clients.
Clarifying product features and use cases would help avoid such confusion.
 

Setup Cost

Microsoft Defender for Office 365 is cost-effective with extensive features but may be costly for smaller organizations with limited budgets.
Microsoft Purview Information Protection offers competitive pricing, attractive bundling, and flexible licensing options, appealing to enterprise buyers.
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.
I talked to people who had compared it to other products on the market, and they're spending five figures to get started.
Our focus is on helping customers maximize their software investment.
The pricing is not very high and is considered fine.
 

Valuable Features

Microsoft Defender for Office 365 provides integrated threat protection, risk notifications, and productivity enhancements through a single management console.
Microsoft Purview excels in data protection with encryption, labeling, cross-platform security, and seamless integration, enhancing compliance and efficiency.
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.
Microsoft Copilot is an advantage because it's enterprise-grade AI.
It's paramount to have a single solution for information protection.
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.
 

Categories and Ranking

Microsoft Defender for Offi...
Ranking in Microsoft Security Suite
11th
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) (1st), Secure Email Gateway (SEG) (1st)
Microsoft Purview Informati...
Ranking in Microsoft Security Suite
14th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
13
Ranking in other categories
Data Governance (4th), Data Privacy Management Software (2nd)
 

Mindshare comparison

As of May 2025, in the Microsoft Security Suite category, the mindshare of Microsoft Defender for Office 365 is 2.4%, down from 2.8% compared to the previous year. The mindshare of Microsoft Purview Information Protection is 1.1%, down from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite
 

Featured Reviews

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.
Heidi Hasting - PeerSpot reviewer
Provides an essential audit trail that helps prevent accidental exposure of sensitive data, but the changing product names are confusing
One of the key features of Microsoft Purview Information Protection is the auto-classification functionalities, although I have found them to be less effective in complex scenarios. The policy toggle, demanding justification for downgrading labels, provides an essential audit trail that helps prevent accidental exposure of sensitive data. The security tools integrate well. I like that you can scan several data or informational assets, such as your SharePoint list, Teams, etc., and bring them into Purview as a central repository. Partnering with other products, like Sentinel, for logging capability and inventory provides a service across the board. It's essential that Purview automatically prevents highly sensitive corporate secrets and data from being ingested into generative AI models, but the reality is that AI is a tool. It's problematic if consumers rely on a tool to protect them because they must be educated first. 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.
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Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
8%
Manufacturing Company
8%
Government
6%
Financial Services Firm
19%
Computer Software Company
12%
Retailer
7%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 is your experience regarding pricing and costs for Microsoft Defender for Office 365?
Money-wise, it is a part of the Office 365 ( /products/office-365-reviews ) suite, making it slightly more expensive compared to Trend Micro. Although Defender is free, you have to pay separately f...
What needs improvement with Microsoft Defender for Office 365?
The main area for improvement is simplifying the implementation and rollout process. There are many conditions to be met, making it challenging to ensure every system is protected. Troubleshooting ...
What do you like most about Microsoft Purview Information Protection?
It ensures that sensitive data is automatically safeguarded, even for email attachments, regardless of the user or device.
What is your experience regarding pricing and costs for Microsoft Purview Information Protection?
The pricing is not very high and is considered fine. Microsoft offers different licensing options. AIP Plan 2 is used for critical users. The AIP is included in the business standard license for cl...
What needs improvement with Microsoft Purview Information Protection?
The most difficult part in the labeling solution is the lack of direct PDF support on Macs, whereas on Windows, a Purview agent can label PDFs. This should be improved to support PDF protection on ...
 

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: April 2025.
850,236 professionals have used our research since 2012.