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Microsoft Defender External Attack Surface Management vs Microsoft Defender for Business comparison

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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:
 

Categories and Ranking

Microsoft Defender External...
Ranking in Microsoft Security Suite
33rd
Average Rating
7.6
Reviews Sentiment
6.0
Number of Reviews
2
Ranking in other categories
Attack Surface Management (ASM) (14th)
Microsoft Defender for Busi...
Ranking in Microsoft Security Suite
12th
Average Rating
7.6
Reviews Sentiment
6.6
Number of Reviews
20
Ranking in other categories
Endpoint Protection Platform (EPP) (12th)
 

Mindshare comparison

As of November 2026, in the Microsoft Security Suite category, the mindshare of Microsoft Defender External Attack Surface Management is 1.4%, up from 0.5% compared to the previous year. The mindshare of Microsoft Defender for Business is 2.5%, down from 3.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Microsoft Security Suite Mindshare Distribution
ProductMindshare (%)
Microsoft Defender for Business2.5%
Microsoft Defender External Attack Surface Management1.4%
Other96.1%
Microsoft Security Suite
 

Featured Reviews

AndyChan3 - PeerSpot reviewer
General manager at a tech services company with 201-500 employees
Enhanced visibility and exposes vulnerabilities but needs more integration
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will move to full-scale production in another year, maybe Microsoft External Attack Surface Management…
YusufBuhari - PeerSpot reviewer
Head Of IT Security at Dangote Industries Limited
Unified defenses have strengthened threat hunting and automated incident disruption
I see room for improvement in Microsoft Defender for Business, particularly regarding the consolidation of all security solutions in one place and the integration of AI and data security into the same platform. I want to see more organized asset inventory, including identities, cloud resources, and various network devices. While there has been innovation from Microsoft, I am concerned about the lack of risk quantification across all major security solutions, including Microsoft's. Risk quantification is essential for CISOs to assess, communicate, and translate security risks into financial impacts, which is a challenge for many security leaders today. I would like to see a clear path for prioritization of risks within Microsoft Defender for Business, especially around vulnerability management. Even though there are features to prioritize remediation of risks based on exploitability, it could be more organized. A clearer structure for prioritizing remediation of risks would help manage them more effectively, as it is impractical to address all risks simultaneously.

Quotes from Members

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

Pros

"Microsoft External Attack Surface Management helps improve the visibility of my exposed vulnerabilities and provides an overview of my security posture across the globe."
"It seems to be better at protecting from cyberattacks."
"Microsoft Defender for Business stands out due to its ease of use, particularly due to the fact that many of my customers already use Microsoft and Azure."
"Microsoft Defender for Business works well with the Microsoft Azure Security ecosystem, including Defender for Endpoint and Office 365 Cloud."
"The solution includes attack-savvy service and risk protection, part of data center management, and offers an effective single-dashboard view with Microsoft 365."
"I recommend Microsoft Defender for Business to startup organizations looking for a plug-and-play solution."
"Everything is stable. There have been no technical errors or stability issues."
"It is scalable."
"A few things are valuable. One is the alerting we see when any kind of intrusion is happening, any kind of malware is being deployed across the endpoints, or any kind of suspicious activity is going on. We have a footprint across all of North America, Canada, and Mexico, so we want to make sure that all our endpoints are protected and we are able to look for any anomalous activity."
"Using Microsoft Defender for Business is beneficial for my company."
 

Cons

"Further integration across different Microsoft products would be an improvement."
"With Microsoft, support is always crazy, it's not easy to get support."
"The integration is not as seamless compared to competitors like Palo Alto."
"Threat protection could be improved even though it is already a built-in feature."
"Microsoft should provide batch management solutions with the application, integrating pass management with roles."
"I am not satisfied with Microsoft's technical support. There are challenges with the knowledge and experience of the support staff, frequent redirection between departments, and slow response times."
"The user interface has a lot of features which can make it complex and hard to adapt to for some users."
"If I need logs and don't have local storage bundled with Defender, I need to add workspace and log analytics, which is costly for storing logs of 2 GB, 5 GB, 10 GB."
"We faced some issues while running some applications on Mac."
"The tool's support is an area of concern where improvements are needed."
"Defender's reporting is rather scattered, and its URL filtering mechanism doesn't really work."
 

Pricing and Cost Advice

Information not available
"It has to get more competitive because we are starting to see some of the competitors providing better pricing, and some of it, of course, is to gain market share. The Defender product pricing is probably a little higher than the competitors."
"Defender for Business is included by default with an Office 365 premium subscription."
"Since we're a nonprofit, we get pretty good discounts on the tool."
"The tool is cheap, while some other solutions are more expensive. I remember the tool cost about five euros for a workstation or for a user on a monthly basis."
"The tool's cost has been a little high, but I do not think it was terrible."
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Top Industries

By visitors reading reviews
Outsourcing Company
13%
Computer Software Company
10%
Financial Services Firm
9%
Comms Service Provider
8%
Computer Software Company
12%
Comms Service Provider
10%
Outsourcing Company
10%
Financial Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise2
Large Enterprise4
 

Questions from the Community

What needs improvement with Microsoft Defender External Attack Surface Management?
Further integration across different Microsoft products would be an improvement. Introduction of more AI automation into the products would also be beneficial. The integration is not as seamless co...
What is your primary use case for Microsoft Defender External Attack Surface Management?
I am currently in the pilot stage of implementing Microsoft External Attack Surface Management (EASM). My organization is transitioning to a comprehensive track of Microsoft solutions, and we will ...
What is your experience regarding pricing and costs for Microsoft Defender for Business?
Our thoughts on the pricing for Microsoft Defender for Business are that we wish it could be better. If the pricing was a little better, we would definitely increase what we currently have.
What needs improvement with Microsoft Defender for Business?
I see room for improvement in Microsoft Defender for Business, particularly regarding the consolidation of all security solutions in one place and the integration of AI and data security into the s...
 

Overview

Find out what your peers are saying about Microsoft Defender External Attack Surface Management vs. Microsoft Defender for Business and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.