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Microsoft Defender for Office 365 vs Microsoft Exchange Online Protection (EOP) comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Cloudflare One
Sponsored
Ranking in Email Security
20th
Average Rating
8.6
Reviews Sentiment
6.5
Number of Reviews
23
Ranking in other categories
Secure Web Gateways (SWG) (12th), Data Loss Prevention (DLP) (22nd), Cloud Access Security Brokers (CASB) (12th), Distributed Denial-of-Service (DDoS) Protection (8th), Software Defined WAN (SD-WAN) Solutions (13th), Access Management (12th), Bot Management (3rd), ZTNA as a Service (8th), ZTNA (4th), Secure Access Service Edge (SASE) (9th), Remote Browser Isolation (RBI) (2nd)
Microsoft Defender for Offi...
Ranking in Email Security
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
61
Ranking in other categories
Email Archiving (1st), Advanced Threat Protection (ATP) (3rd), Microsoft Security Suite (9th), Secure Email Gateway (SEG) (2nd)
Microsoft Exchange Online P...
Ranking in Email Security
8th
Average Rating
8.2
Reviews Sentiment
6.6
Number of Reviews
42
Ranking in other categories
Anti-Malware Tools (14th)
 

Mindshare comparison

As of August 2026, in the Email Security category, the mindshare of Cloudflare One is 1.7%, up from 1.4% compared to the previous year. The mindshare of Microsoft Defender for Office 365 is 5.7%, down from 11.6% compared to the previous year. The mindshare of Microsoft Exchange Online Protection (EOP) is 3.0%, down from 5.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Email Security Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Office 3655.7%
Microsoft Exchange Online Protection (EOP)3.0%
Cloudflare One1.7%
Other89.6%
Email Security
 

Featured Reviews

CV
Network Architect at IP Dimension
Cloud security has improved remote access and has reduced costs for smaller client sites
I have used Cloudflare One's Identity-Aware Proxy, and it is quite straightforward from what I have seen so far. The app registration on the Azure side integrates fully into Cloudflare, and I am very satisfied with that part because it is easy to set up. The integration of Cloudflare One's Secure Web Gateway and Zero Trust Network Access works without any issues. That part is pretty automatic, and if you complete the rest of the setup, it comes together by itself with no issues from my side. What makes it nice is that we can actually start replacing on-site firewalls at this stage for the smaller clients because it does not matter if they go to a coffee shop or work from home; they are still secured by the same connection. The hops get shorter and you get better latency. We have done testing to see if it is better. One thing that we did notice with our proof of concept with our current client is that they have people connecting from the UK. When they used their previous VPN solution, uploading CAD drawings and other files to the server took a long time. They mentioned that it is much quicker on Cloudflare One's solution. I definitely believe that is part of the improved performance, and I am satisfied with that as well. What is nice about Cloudflare One is that it makes the setup easier and also easier to train technicians to maintain it. Compared to legacy systems, we do not need to get fancy firewalls in place that are costly. That is definitely also a cost-saver with Cloudflare One.
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.
NancyHartman - PeerSpot reviewer
Business Process Manager/ Educational Technologist at a educational organization with 1,001-5,000 employees
Layered email security has protected sensitive research and still flags phishing in real time
The valuable features of Microsoft Exchange Online Protection (EOP) include providing an additional layer of protection, as it builds on the basic Exchange level of security that allows us to get our work done. Another feature I appreciate is the ability to question things, as our Exchange server allows us to identify in real-time if an email is a phishing email or spam email. It really helps us identify risks, especially through our external exchanges via email or through our cloud-based platforms. Our Exchange system blocks any embedded AI from all our applications and products, so we cannot use embedded AI in our daily work from our official laptops because we have secure information. The system is quite locked down.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"For Cloudflare Access, I am using the free plan...The most valuable feature is their protection."
"The capabilities of the software are strong enough for me to do what it's supposed to do. For me, we don't need to do a lot of configuration on our site. We just enable it and monitor it."
"Cloudflare DDoS mitigates DDoS attacks."
"Enables me to work from two locations."
"Using Cloudflare One makes my work quite easy because for DDoS protection, all I need to do is understand the OSI model and click; it makes it easier than trying to write a command line or use a Linux command."
"Cloudflare One has assisted in securing my remote workforce through a SASE solution with Cloudflare One and the Workers part, although I am not currently using the Workers component."
"I'm very satisfied with the environment and the dashboard."
"Cloudflare Access is part of the Zero Trust philosophy."
"The good part is that you don't have to configure it, which is very convenient."
"The deployment capability is a great feature."
"It has significantly decreased my time to detection and response."
"Microsoft Defender has a feature to protect each and every attachment. Even if it's an encrypted attachment, it will check for any potential threats."
"Microsoft Defender for Office 365's most valuable features are safe attachments and safe links."
"The DLP feature of Microsoft Defender for Office 365 is valuable, and we also use the DLP feature for email real-time detection."
"It gives us visibility into threats and, for endpoints, it helps us to prioritize threats. We used to have a lack of visibility, but now our time to detect and respond has decreased."
"We have seen a return on investment because if we would have received a phishing email, Microsoft Defender for Office 365 would help out to detect the threat instead of crashing down the whole company."
"Online Protection's most valuable feature is its admin interface."
"The email policy configuration options in Microsoft EOP are satisfactory."
"In general, my company is happy with Microsoft support...My company hasn't faced any stability issues with the solution."
"The simplicity and the easy deployment ensure that anybody who has worked on Exchange can easily work on this."
"The initial setup of Microsoft Exchange Online Protection was easy."
"The initial setup is just a standard process."
"The scalability is pretty good; it does what it is supposed to do."
"With Microsoft Exchange Online Protection, if malware is attached to a mailer, it's very easy to go into the incident alert and find out what's happening with that identity and the mail."
 

Cons

"When there are any dynamic changes in complex applications, the tool takes a lot of time, making its analytics-related area a major matter of concern where improvements are needed."
"Cloudflare One is not very powerful, but for what we require, it is basic and sufficient."
"Feedback could be enhanced. While I work efficiently with Clover as a partner in Mexico City, sometimes the information and requests are easier to manage with more concrete solutions."
"Our subscription plan for the solution has a limitation of bot signatures."
"The response time for support must be reduced."
"Cloudflare DDoS has poor technical support."
"Operating and tuning the product is difficult."
"There are premium tier live service and lower tier live service, so we opted for the lower tier. But there is no medium tier where we pay a little extra and get a bit more service. So if that can be improved."
"One area for improvement is support, in terms of being able to reach them and, especially, technical support for configuration."
"The cost of Security Copilot is up there right now, and I think it needs to come down for more people to adopt."
"We noticed that from time to time, Microsoft's stability does have problems. Sometimes the service goes up and down. Sometimes they change without prior notice."
"I think that Microsoft Defender for Office 365 could be improved if it could use VirusTotal to compare the programs or anything that I download."
"Microsoft should provide more documentation for users so they can self-educate. I would like to see more documentation for advanced security features."
"The inbuilt analysis of false positives can be faster. It's not slow, but it can be faster."
"The changes to customer service, specifically the new model for support agreements, are not favorable."
"The phishing and spam filters could use some improvement."
"The biggest issue that I experience is that Microsoft keeps moving things around, and it's very inconsistent as to where you find the information when you're trying to work on different pieces."
"Besides price, the main room for improvement includes the sandbox or something similar; the usability that solutions are focused on."
"Our company faces difficulty with Microsoft Exchange Online Protection (EOP) because it's too big, clunky, and difficult for a small client to implement quickly and easily."
"The product needs more granularity. Some features, like encryption, are not available."
"I am somewhat happy with technical support from Microsoft. Sometimes it takes a while to get through to the right person or team."
"The management interface of Microsoft Exchange Online Protection (EOP) could be intuitive."
"It wasn't easy or intuitive enough for me to start using it. So, the reason was that the solution changed."
"The tool's classification for bulk email is cumbersome."
 

Pricing and Cost Advice

"The prices are slightly expensive."
"My company has to make yearly payments towards the licensing costs attached to the solution. There are no hidden charges apart from the licensing costs of the solution."
"Cloudflare Zero Trust Platform's pricing is good."
"The pricing of the solution is cheap. The licensing cost is also very low. I rate the cost and pricing a three out of ten."
"The pricing is somewhere in the middle. I would rate the pricing a seven out of ten."
"The solution is not that expensive."
"The solution's pricing lacks transparency."
"The price tag is no longer $200,000, but rather $300,000 to $400,000. It's twice."
"For licensing, it's usually a yearly package for customers who are subscribed to Office 365, but they can also pay on a monthly basis."
"Microsoft Defender is expensive. I typically recommend it only if clients have the budget. Otherwise, I would suggest an alternative."
"Microsoft Defender for Office 365 is an add-on to the Office license. Many customers are purchasing this solution."
"The license is expensive because the cost is based on the number of users."
"From the pricing point of view, like any other product in the market, there is scope for negotiation."
"For large enterprise organizations, they can definitely afford it, but for small and medium organizations, they might struggle to cover the expenses."
"The product is very expensive."
"While Microsoft Defender for Office 365 necessitates pricier E3 or E5 subscriptions, the extensive functionality offered by these licenses across various Microsoft products justifies the investment."
"The solution is priced high and could be less expensive compared to other solutions."
"The solution's pricing is subscription-based rather than a yearly licensing cost. Pricing is based on the size of the environment and company and can be expensive."
"The solution is expensive but is backed by Microsoft's reputation."
"The price of Microsoft Exchange Online Protection is reasonable."
"Microsoft Exchange Online Protection is a good solution at an affordable price. It is a good investment."
"The pricing for the solution depends on what you are trying to achieve with the use of the product, but I know that it is not a cheaply priced product. Yearly payments have to be made towards the licensing fees of the solution."
"The price could be lower."
"On a scale of one to ten, where one is cheap, and ten is very expensive, I rate the pricing a six. For licensing, we can make monthly or yearly payments. Right now, we pay 5 USD per month to secure a person's license."
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Top Industries

By visitors reading reviews
Construction Company
19%
Comms Service Provider
11%
Outsourcing Company
9%
Financial Services Firm
8%
Computer Software Company
11%
Manufacturing Company
9%
Financial Services Firm
9%
Comms Service Provider
7%
Financial Services Firm
11%
Manufacturing Company
9%
Computer Software Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise1
Large Enterprise12
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise11
Large Enterprise32
By reviewers
Company SizeCount
Small Business24
Midsize Enterprise7
Large Enterprise11
 

Questions from the Community

What needs improvement with Cloudflare Zero Trust Platform?
In my opinion, Cloudflare One can be improved mainly through compatibility, as the integration should be much simpler...
What is your primary use case for Cloudflare Zero Trust Platform?
Cloudflare One's primary use case for my organization is to protect servers and to provide remote access with the VPN...
What is your experience regarding pricing and costs for Microsoft Defender for Office 365?
My experience with pricing, setup, and licensing is that it's actually quite reasonable even on the licensing side as...
What needs improvement with Microsoft Defender for Office 365?
I think Microsoft Defender for Office 365 can be improved by creating more educational pieces about not just looking ...
What is your primary use case for Microsoft Defender for Office 365?
My main use cases for Microsoft Defender for Office 365 include email hygiene.
What needs improvement with Microsoft Exchange Online Protection?
From an end-user point of view, I am quite happy with Microsoft Exchange Online Protection (EOP) because my favorite ...
What is your primary use case for Microsoft Exchange Online Protection?
Microsoft Exchange Online Protection (EOP) serves as the main use case for my company because, as a research company,...
What advice do you have for others considering Microsoft Exchange Online Protection?
My experience with Microsoft Exchange Online Protection (EOP) is from an end-user perspective, and I do not have admi...
 

Also Known As

Cloudflare Area 1 Email Security, Cloudflare Bot Management, Cloudflare Gateway, Cloudflare Zero Trust Platform, Cloudflare DDoS, Cloudflare SASE & SSE Platform
MS Defender for Office 365
Microsoft EOP, MS Exchange Online Protection
 

Overview

 

Sample Customers

23andMe
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 Exchange Online Protection (EOP) and other solutions. Updated: August 2026.
909,099 professionals have used our research since 2012.