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

Microsoft Defender XDR vs Stellar Cyber Open XDR 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:
 

Categories and Ranking

Microsoft Defender XDR
Ranking in Endpoint Detection and Response (EDR)
5th
Ranking in Extended Detection and Response (XDR)
2nd
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
102
Ranking in other categories
Microsoft Security Suite (4th)
Stellar Cyber Open XDR
Ranking in Endpoint Detection and Response (EDR)
62nd
Ranking in Extended Detection and Response (XDR)
35th
Average Rating
0.0
Reviews Sentiment
7.0
Number of Reviews
2
Ranking in other categories
Security Information and Event Management (SIEM) (49th), User Entity Behavior Analytics (UEBA) (22nd), Network Traffic Analysis (NTA) (19th), Security Orchestration Automation and Response (SOAR) (24th), Network Detection and Response (NDR) (20th), Identity Threat Detection and Response (ITDR) (21st)
 

Mindshare comparison

As of October 2025, in the Extended Detection and Response (XDR) category, the mindshare of Microsoft Defender XDR is 5.9%, down from 8.1% compared to the previous year. The mindshare of Stellar Cyber Open XDR is 2.1%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Extended Detection and Response (XDR) Market Share Distribution
ProductMarket Share (%)
Microsoft Defender XDR5.9%
Stellar Cyber Open XDR2.1%
Other92.0%
Extended Detection and Response (XDR)
 

Featured Reviews

MohtesanShaikh - PeerSpot reviewer
Experience improves security management and simplifies threat protection
I have created automated investigations, and while they work, they operate rather slowly in the Microsoft portal. If I automate something, it takes considerable time; if I do it manually, I can complete it in a quarter of the time. The automation response being slow is the main concern; when an incident occurs or if I run a remediation, it takes significant time to complete the remediation. There are some limitations regarding the scalability of Microsoft Defender XDR with specific licensing. For SMB customers, there is only Microsoft Defender for Business, and if they want more features such as XDR features and automation investigation or incident response, they need to purchase Defender for Endpoint. We are currently using the EDR.
Hrishiraj Bhattacharjee - PeerSpot reviewer
Correlates incidents, allows for quicker identification and helps prioritize investigations
The only challenge is, and that’s where we come into play, it’s a pretty high-tech platform. So, it’s difficult for small and medium-sized organizations to manage it on their own. It’s a very complex system. It requires a lot of expertise. All my guys who work on it have gone through certification from Stellar itself. There are three different certifications that you need to complete. Only then are you certified by Stellar to work on it. It’s a very complex platform. Not everyone can use it. A simple IT engineer or system admin won’t be able to handle it because it’s quite complex. You need to have an understanding of the industry, the subject, and the tool. So, just purchasing this tool or license and then using it on your own would be very difficult to configure and manage on a day-to-day basis. The pricing model is not suitable for small and medium companies, particularly small companies. The minimum pricing model they have is suitable for companies with more than one thousand users. So, if someone has 50 to 100 users, like typical small companies, it’s difficult for them because the cost involved is high. Stellar would charge you for those thousand users, but you do not need all those users. So what are they going to do? I guess Stellar does not want to target small companies directly and maybe relies on resellers and MSPs like us to sell it. So, that is something I would recommend changing. Otherwise, it’s a great tool, but because of the pricing model, small companies are unable to leverage the advantage of this beautiful tool. So, the pricing model should be suitable for small and medium businesses. The product currently has vulnerability monitoring and everything. But if they could also do something about vulnerability management and maybe patch management, that would be nice.

Quotes from Members

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

Pros

"Vulnerability assessment and just-in-time access are some valuable features of Defender for server plans."
"Email protection is the most valuable feature of Microsoft Defender XDR."
"Vulnerability assessment and just-in-time access are some valuable features of Defender for server plans."
"It has great stability."
"As a reseller and partner, the advantages of Microsoft Defender XDR are numerous; I have stopped many threats for many organizations using Defender alone, and I have saved significant IT management time by avoiding manual updates and manual work."
"The visibility into threats is also very impressive because Microsoft helps you predict things and provides analytics to help you really improve your security. And all of this technology works across the domain, so it is pretty helpful in terms of threat analytics."
"Microsoft Defender is stable."
"We can automate routine tasks and write scripts to carry out difficult tasks, which makes things easier for us."
"Stellar Cyber Open XDR offers these functionalities at a more affordable price, making it easier for me to position it with price-sensitive customers."
"It can integrate with almost any cybersecurity tool available in the market."
 

Cons

"Defender XDR could provide recommendations for threat-hunting queries. Some people do not know how to write an advanced threat query, so we need to spend time training them."
"The management and automation of the cloud apps have room for improvement."
"The dashboard should be easier to use. There is also improvement needed in the reporting when it comes to exporting or scheduling reports."
"Correctly updated records are the most significant area for improvement. There have been times when we were notified of a required fix; we would carry out the fix and confirm it but still get the same notification a week later. This seems to be a delay in records being updated and leads to false reporting, which is something that needs to be fixed."
"Sometimes, configurations take much longer than expected."
"The logs could be better."
"This solution could be improved if it included features such as those offered by Malwarebytes."
"From an integration standpoint, it is always improving overall. With Security Copilot coming out, as partners, we are waiting for the GDAP support so that we can actually see Security Copilot on behalf of customers if they subscribe to it."
"Support is an issue because they have a limited number of resources."
"I would rate the stability at about five to six. The platform requires some fine-tuning, especially when integrating data sources and creating connectors."
 

Pricing and Cost Advice

"Microsoft Defender XDR's licensing is complicated."
"Microsoft Defender XDR is included in our license."
"While Microsoft Defender XDR carries a higher cost, its ease of use compared to Defender may justify the investment."
"It can be complex to navigate since customers have varying licensing agreements across Microsoft. If they go straightforward with E5 for all users, it's simple, but combinations based on budget constraints can complicate things."
"The license cost for a year is approximately forty-four thousand, and this annual saving is a significant factor in our decision to switch."
"Sometimes 365 Defender is expensive, but it can be moderate, depending on the organization's size and the license type. We're satisfied with the cost because it gives us a product that protects our entire environment with DLP. To compromise some cost, of course, we are to complete the most secure environment."
"With the little idea I have about the costs, I can say that XDR tools tend to be a bit expensive. If you are using Microsoft Defender XDR, then you need to go for a subscription-based pricing model."
"All I can say again is the E5 gives you all the capabilities that it offers. It also gives Office 365 and one terabyte of storage. All in all, the E5 license model makes sense. There are some people who say it's quite costly, but rather than paying different vendors, it makes sense to go all in with Microsoft if you've got that licensing. From that perspective, it's cost-effective, but I can't comment much on that."
"It’s a single license platform."
report
Use our free recommendation engine to learn which Extended Detection and Response (XDR) solutions are best for your needs.
870,701 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
16%
Financial Services Firm
8%
Manufacturing Company
8%
Comms Service Provider
7%
Manufacturing Company
12%
Computer Software Company
11%
Comms Service Provider
10%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business46
Midsize Enterprise23
Large Enterprise37
No data available
 

Questions from the Community

What do you like most about Microsoft 365 Defender?
Microsoft Defender XDR provides strong identity protection with comprehensive insights into risky user behavior and potential indicators of compromise.
What is your experience regarding pricing and costs for Microsoft 365 Defender?
The pricing for Microsoft Sentinel operates on a pay-as-you-go model based on data ingestion. I recall that Defender XDR pricing is based on the number of endpoints.
What needs improvement with Microsoft 365 Defender?
I have created automated investigations, and while they work, they operate rather slowly in the Microsoft portal. If I automate something, it takes considerable time; if I do it manually, I can com...
What is your experience regarding pricing and costs for Stellar Cyber Open XDR?
Pricing is a major benefit of Stellar Cyber Open XDR. I rate it between three and four on the cost scale. It offers functionalities at a significantly lower cost than rival products, enabling me to...
What needs improvement with Stellar Cyber Open XDR?
I am currently evaluating Stellar Cyber Open XDR in terms of their support. I do not see any major areas for improvement as of now. Their support is good, and the team is small, enabling them to ca...
What is your primary use case for Stellar Cyber Open XDR?
I use Stellar Cyber Open XDR ( /products/stellar-cyber-open-xdr-reviews ) as a 24/7 security monitoring tool, especially for customers with large and medium networks. It eliminates the need for a d...
 

Also Known As

Microsoft 365 Defender, Microsoft Threat Protection, MS 365 Defender
No data available
 

Overview

 

Sample Customers

Accenture, Deloitte, ExxonMobil, General Electric, IBM, Johnson & Johnson and many others.
Sumitomo Chemical USA, PlastiPak Packaging, University of Denver, Large California State Agency, Large Midwestern American City
Find out what your peers are saying about Microsoft Defender XDR vs. Stellar Cyber Open XDR and other solutions. Updated: September 2025.
870,701 professionals have used our research since 2012.