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Fortinet FortiSIEM vs Microsoft Sentinel comparison

 

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:
 

ROI

Sentiment score
5.1
Fortinet FortiSIEM delivers security improvements and customer satisfaction, leading to positive financial outcomes despite no explicit ROI measurement.
Sentiment score
6.7
Microsoft Sentinel enhances ROI with automation, boosts productivity, lowers costs, and improves security through efficient integration and faster responses.
The platform has resulted in time saved and reduces mean time to response, making it a great platform.
Cybersecurity Team Leader at EMAK For Integrated Solutions
If a customer is already using Microsoft’s ecosystem, the ROI can be positive due to seamless integration.
senior cyber security at a tech services company with 201-500 employees
Our MTTR, mean time to response, improved by forty to fifty percent. Earlier, medium-severity incidents took two to three hours to resolve. Now, after Microsoft Sentinel, it is forty to fifty-five minutes.
Cyber Security Consultant at ProTechmanize
We attribute our growth to Sentinel.
Chief Commercial Officer at defend
 

Customer Service

Sentiment score
7.7
Fortinet FortiSIEM's customer service is seen as professional but has mixed reviews on response times and support accessibility.
Sentiment score
6.5
Microsoft Sentinel support is praised for quick, knowledgeable responses, with higher satisfaction in premium plans despite some documentation challenges.
Local tech support is available, however, for more critical or technical issues, we depend on the OEM directly, especially when it comes to on-prem solutions.
IT Solutions Product Manager at a computer software company with 11-50 employees
There is a knowledgeable, though small, team of support engineers around the world.
Network Engineer at Laminar Communications Pty Ltd
The customer support for Fortinet FortiSIEM is excellent.
Cybersecurity Team Leader at EMAK For Integrated Solutions
Their solutions' integration simplifies resolving issues compared to those caused by third-party products.
IT Consultant at MAN Truck & Bus SE
Microsoft invests significantly in support, which is crucial for companies.
Director de Microsoft y Transformación Digital at Compucad
Working with a Sentinel engineer helped us tune settings effectively.
Systems Emgineer at a non-profit with 1-10 employees
 

Scalability Issues

Sentiment score
7.6
Fortinet FortiSIEM scales well, accommodating different business sizes but faces challenges with licensing, architecture, and configuration complexities.
Sentiment score
7.7
Microsoft Sentinel offers scalable, cloud-based operations with seamless Azure integration, emphasizing elasticity and cost considerations for effective data management.
At any point in time, when network devices increase or there is a change in the infrastructure, we can add more workers and collectors to expand our infrastructure setup.
IT Solutions Product Manager at a computer software company with 11-50 employees
Fortinet FortiSIEM is highly scalable.
Network Engineer at Laminar Communications Pty Ltd
Fortinet FortiSIEM's scalability is excellent, and it is also easy to configure, maintain, and operate.
Cybersecurity Team Leader at EMAK For Integrated Solutions
Office 365 and Exchange are running on it, covering about 35,000 users efficiently.
IT Consultant at MAN Truck & Bus SE
There is no need to add hardware or redesign infrastructure because it is cloud-native.
Cyber Security Consultant at ProTechmanize
As our organization uses Microsoft Azure and Defender, everything grows together, and we can integrate various features seamlessly.
Systems Emgineer at a non-profit with 1-10 employees
 

Stability Issues

Sentiment score
6.2
Fortinet FortiSIEM is reliable and stable, handling updates well, with users rating its performance highly despite occasional bugs.
Sentiment score
7.8
Microsoft Sentinel is reliable with 99.9% uptime, minor glitches, and minimal maintenance thanks to its managed service aspect.
It stabilizes itself in an appropriate time, so its uptime is good.
IT Solutions Product Manager at a computer software company with 11-50 employees
These issues may cause unusual errors and user interface issues.
Network Engineer at Laminar Communications Pty Ltd
Some stability issues occur, but Fortinet's technical support team provides assistance.
Network Engineer at Ogma Consulting
So far, we have not experienced any issues, and it has been stable from the beginning.
IT Consultant at MAN Truck & Bus SE
In the past two years, our team hasn't encountered any issues with the stability of Microsoft Sentinel from an operations perspective.
Project Executive at synergyc
I need to be aware of deprecated connectors as they may disconnect, but the data continues to be sent with a need for quick adaptation.
senior cyber security at a tech services company with 201-500 employees
 

Room For Improvement

Fortinet FortiSIEM needs improvements in integration, user interface, support, cost, and features like AI and automated responses.
Users seek better integration, documentation, user-friendliness, AI, automation, and transparency in Microsoft Sentinel for improved threat management.
Recently, they revised it to a subscription-based, all-inclusive license.
IT Solutions Product Manager at a computer software company with 11-50 employees
The built-in APIs in Fortinet FortiSIEM are somewhat lacking and could be improved for better integration with external ITSM products.
Network Engineer at Laminar Communications Pty Ltd
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management.
Network Engineer at Ogma Consulting
Log ingestion and retention costs can grow quickly, and understanding which data source is driving cost is not always straightforward.
Cyber Security Consultant at ProTechmanize
We have some tools, such as our off-site Meraki firewalls, that have not fully integrated with Sentinel.
Systems Emgineer at a non-profit with 1-10 employees
Currently, we are happy to have a way in the middle with not so much cost, but it would be nice to have the ability to enhance the automation of workflows based on learned incidents.
IT Consultant at MAN Truck & Bus SE
 

Setup Cost

Fortinet FortiSIEM provides flexible pricing that can be cost-effective, but costs may increase with additional modules and scalability.
Microsoft Sentinel's pricing is flexible yet costly, requiring optimization and integration to maximize cost-effectiveness for data management.
Setting it up for oneself as an enterprise-licensed product can be quite expensive.
Network Engineer at Laminar Communications Pty Ltd
Windows agent licenses cost around 3,000 Rupees per device per year.
Network Engineer at Ogma Consulting
The revised model is subscription-based and more flexible.
IT Solutions Product Manager at a computer software company with 11-50 employees
It has been beneficial that Microsoft Sentinel is included as part of the Microsoft package, making it more cost-effective.
Senior System Administrator at a university with 5,001-10,000 employees
Microsoft Sentinel is not a low-cost SIEM.
Cyber Security Consultant at ProTechmanize
Microsoft Sentinel offers more capabilities than Bastion, with a more intuitive experience.
Project Executive at synergyc
 

Valuable Features

Fortinet FortiSIEM provides automation, analytics, and integration with a user-friendly interface for efficient threat detection and network monitoring.
Microsoft Sentinel excels in integration, AI, scalability, automation, and user experience, with powerful threat detection and response features.
It provides extensive logging and record-keeping for internal networks, cloud applications, and services as well as perimeter physical network security.
Network Engineer at Laminar Communications Pty Ltd
I find the real-time monitoring and correlation capabilities effective for security alerts.
Network Engineer at Ogma Consulting
Reliability and scalability have helped me in my work, especially because the license for Fortinet FortiSIEM is excellent from a cost perspective, and we can add more collectors as we expand.
Cybersecurity Team Leader at EMAK For Integrated Solutions
Microsoft Sentinel's ability to correlate data from multiple sources and its detection capabilities are essential.
Cost Engineer at a tech vendor with 10,001+ employees
Microsoft Sentinel has improved cost efficiency, which is one of the key areas we're able to win business against the ability to have threat intelligence.
Chief Commercial Officer at defend
Microsoft Sentinel's ability to correlate data from multiple sources enhances our threat detection capabilities beyond what is a simple data lake solution by filtering out the noise and consolidating the signal down to a meaningful level that is easier to investigate and see.
Solutions Architect at a tech vendor with 201-500 employees
 

Categories and Ranking

Fortinet FortiSIEM
Ranking in Security Information and Event Management (SIEM)
7th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
76
Ranking in other categories
AI Observability (5th)
Microsoft Sentinel
Ranking in Security Information and Event Management (SIEM)
4th
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
104
Ranking in other categories
Security Orchestration Automation and Response (SOAR) (1st), Microsoft Security Suite (6th), AI-Powered Cybersecurity Platforms (5th)
 

Mindshare comparison

As of January 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Fortinet FortiSIEM is 2.8%, down from 3.0% compared to the previous year. The mindshare of Microsoft Sentinel is 5.0%, down from 7.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Market Share Distribution
ProductMarket Share (%)
Microsoft Sentinel5.0%
Fortinet FortiSIEM2.8%
Other92.2%
Security Information and Event Management (SIEM)
 

Featured Reviews

SY
Network Engineer at Ogma Consulting
Comprehensive monitoring boosts security, yet incident management features need expansion
Fortinet FortiSIEM should broaden its remediation part to include more features for incident management. Currently, to manage repetitive incidents or for remediation, I need to use a separate software called FortiSOAR. Additionally, the search functionality in FortiAI should be improved to provide more precise results, making it easier for me to understand what actions need to be taken.
Kallamuddin Ansari - PeerSpot reviewer
Cyber Security Consultant at ProTechmanize
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.
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Financial Services Firm
9%
Comms Service Provider
8%
Manufacturing Company
6%
Computer Software Company
14%
Financial Services Firm
10%
Manufacturing Company
9%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business34
Midsize Enterprise22
Large Enterprise24
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise22
Large Enterprise45
 

Questions from the Community

What do you like most about Fortinet FortiSIEM?
Fortinet FortiSIEM needs to provide better API integrations to users.
What is your experience regarding pricing and costs for Fortinet FortiSIEM?
My experience with pricing, setup cost, and licensing for Fortinet FortiSIEM is wonderful, as it offers an excellent license compared to other vendors.
What needs improvement with Fortinet FortiSIEM?
Fortinet FortiSIEM is great overall. Performance could be enhanced, but I do not wish to elaborate on needed improvements.
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

FortiSIEM, AccelOps
Azure Sentinel
 

Overview

 

Sample Customers

FortiSIEM has hundreds of customers worldwide in markets including managed services, technology, financial services, healthcare, and government. Customers include Aruba Networks, Compushare, Port of San Diego, Cleveland Indians, Infoblox, Healthways, and Referentia.
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 Fortinet FortiSIEM vs. Microsoft Sentinel and other solutions. Updated: December 2025.
881,082 professionals have used our research since 2012.