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Graylog Security vs Microsoft Sentinel comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 2024

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

Graylog Security
Ranking in Security Information and Event Management (SIEM)
60th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Microsoft Sentinel
Ranking in Security Information and Event Management (SIEM)
3rd
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
108
Ranking in other categories
Security Orchestration Automation and Response (SOAR) (3rd), Microsoft Security Suite (5th), AI-Powered Cybersecurity Platforms (5th)
 

Mindshare comparison

As of October 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Graylog Security is 0.6%, up from 0.6% compared to the previous year. The mindshare of Microsoft Sentinel is 3.6%, down from 6.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Microsoft Sentinel3.6%
Graylog Security0.6%
Other95.8%
Security Information and Event Management (SIEM)
 

Featured Reviews

Tony Zafiropoulos - PeerSpot reviewer
Owner/ Chief Engineer at Fixvirus.com
Aggregates logs in one place and helps to review data points
We tried Graylog Security, starting with their inexpensive open-source version. We tested it out and continued using it for a while. As for the main differences between Graylog Security and other vendors, some users might prefer cloud-based platforms over on-premises solutions. It isn't inherently cloud-native, but that might not matter much for some.
Kallamuddin Ansari - PeerSpot reviewer
Cyber Security Consultant at HR Software Solution
Centralized monitoring has improved threat response but cost control still needs refinement
Based on real operations used in our corporate IT environment, the key features include log correlation and incident view. Microsoft Sentinel's biggest strength is how it correlates multiple related alerts into a single incident. This significantly reduces alert noise and helps the SOC focus on real threats instead of isolated events. Another valuable feature is KQL-based threat hunting with Kusto Query Language. The flexibility of this language allows us to build custom hunting queries based on our environment's behavior. This is extremely useful for detecting low and slow threats or hidden threats that default rules may miss. Cloud-native scalability and stability is another important feature. Being cloud-native, Microsoft Sentinel scales well for medium to large corporate environments without infrastructure management. Stability has been solid in day-to-day production. SOAR automation using playbooks is a feature we highly recommend. Microsoft Sentinel's SOAR functionality helps automate repetitive SOC tasks like alert enrichment and notification. This saves analyst time and improves response consistency.

Quotes from Members

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

Pros

"The tool aggregates logs. We can see the logs in one place."
"We use the solution to collect logs."
"One of the most valuable features is that it creates a kind of a single pane of glass for organizations that already use Microsoft software. So, when they have things like Microsoft 365, it is very easy for them to kind of plug in or enroll those endpoints into the Azure Sentinel service."
"The product can integrate with any device."
"Azure Sentinel is actually quite handy, and very adaptive to the market trends."
"Sentinel improved how we investigate incidents. We can create watchlists and update them to align with the latest threat intelligence. The information Microsoft provides enables us to understand thoroughly and improve as we go along. It allows us to provide monthly reports to our clients on their security posture."
"We’ve got process improvement that's happened across multiple different fronts within the organization, within our IT organization based on this tool being in place."
"Microsoft is continuously improving this product, and we also have private access where we can see what features are being launched and provide input to them."
"From a visibility and compatibility perspective, it's really a nice product to have as a SIEM solution for your cloud environment."
"Microsoft Sentinel stands out among SIEM tools for its user-friendliness and powerful built-in query language."
 

Cons

"Graylog Security needs to incorporate security scorecards."
"I think any feature which can further help streamline the different security products Microsoft offers would be beneficial."
"In terms of improvements, pricing, licensing, and overall cost could be better."
"They could use some kind of workbook. There is some limitation doing the editing and creating the workbook."
"The product can be improved by reducing the cost to use AI machine learning."
"Azure Sentinel will be directly competing with tools such as Splunk or Qradar. These are very established kinds of a product that have been around for the last seven, eight years or more."
"The on-prem log sources still require a lot of development."
"The data connectors for third-party tools could be improved, as some aren't available in Sentinel. They need to be available in the data connector panel."
"Its implementation could be simpler. It is not really simple or straightforward. It is in the middle. Sometimes, connectors are a little bit complex."
 

Pricing and Cost Advice

"I rate the tool's pricing a one out of ten."
"The pricing is fair... With a traditional SIEM, you pay a lump sum for licenses. But with Sentinel, it's pay-as-you-go according to the amount of data you inject."
"From a cost point of view, it is not a cheap product. It's, like, an enterprise-level application. So if you compare it with a low-level application, it's expensive, but if you compare it with the same-level application, it's pretty much cost-effective, I think."
"Sentinel is pretty competitive. The pricing is at the level of other SIEM solutions."
"The solution is expensive and there is a daily usage fee."
"The combination of the ease of accessibility and the free cost of the service is great. But we buy storage based on our events per second and on how many sources are integrated into the solution."
"Sentinel is a pay-as-you-go solution. To use it, you need a Log Analytics workspace. This is where the logs are stored and the cost of Log Analytics is based on gigabytes... On top of that, there is the cost of Sentinel, which is about €2 per gigabyte. If a customer has an M365 E5 license, the logs that come from Microsoft Defender are free."
"The current licensing is based on the logs that are being ingested on the platform. Most of the SIEM solutions utilize that pricing model, but Microsoft should give us a customization option for controlling the kind of logs that we feed into Microsoft Sentinel. That will be much better. Otherwise, the pricing is a bit higher."
"I have had mixed feedback. At one point, I heard a client say that it sometimes seems more expensive. Most of the clients are on Office 365 or M365, and they are forced to take Azure SIEM because of the integration."
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Top Industries

By visitors reading reviews
Educational Organization
13%
Comms Service Provider
9%
Retailer
8%
Outsourcing Company
8%
Manufacturing Company
11%
Financial Services Firm
11%
Computer Software Company
7%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business44
Midsize Enterprise23
Large Enterprise47
 

Questions from the Community

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Is there a common threat intelligence tool that aggregates multiple threat intelligence sources?
Yes, Azure Sentinel is a SIEM on the Cloud. Multiple data sources can be uploaded and analyzed with Azure Sentinel and its Threat Hunting functionality with AI available as templates or customized ...
What is a better choice, Splunk or Azure Sentinel?
It would really depend on (1) which logs you need to ingest and (2) what are your use cases Splunk is easy for ingestion of anything, but the charge per GB/Day Indexed and it gets expensive as log ...
Which is better - Azure Sentinel or AWS Security Hub?
We like that Azure Sentinel does not require as much maintenance as legacy SIEMs that are on-premises. Azure Sentinel is auto-scaling - you will not have to worry about performance impact, you will...
 

Also Known As

No data available
Azure Sentinel
 

Overview

 

Sample Customers

Information Not Available
Microsoft Sentinel is trusted by companies of all sizes including ABM, ASOS, Uniper, First West Credit Union, Avanade, and more.
Find out what your peers are saying about Graylog Security vs. Microsoft Sentinel and other solutions. Updated: September 2026.
919,003 professionals have used our research since 2012.