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Microsoft Sentinel vs OpenText Enterprise Security Manager comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 29, 2026

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
6.8
Microsoft Sentinel enhances ROI with faster incident response, automation, and cost efficiency, providing significant operational and security improvements.
Sentiment score
4.9
OpenText Enterprise Security Manager aids compliance and threat detection, though ROI clarity varies due to costs and licensing model.
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 HR Software Solution
We attribute our growth to Sentinel.
Chief Commercial Officer at defend
I find that using ArcSight Enterprise Security Manager (ESM) provides a valuable return on investment as it serves as a single point of glass for logs and data analysis.
Cloud Security Archirect at IBM
 

Customer Service

Sentiment score
6.4
Microsoft Sentinel customer service is praised for staff expertise, but premium support is quicker; communication consistency could improve.
Sentiment score
5.4
OpenText Enterprise Security Manager receives mixed reviews, with inconsistent technical support and reliance on self-resolution despite improvements.
Microsoft invests significantly in support, which is crucial for companies.
Director de Microsoft y Transformación Digital at Compucad
I believe Microsoft could improve by keeping customer service within the US for Microsoft Sentinel customers who are within state and federal government sectors.
Infosec at a government with 10,001+ employees
Working with a Sentinel engineer helped us tune settings effectively.
Systems Emgineer at a non-profit with 1-10 employees
If I raise a P1 or P0 ticket, the response time is often delayed by four to eight hours.
Senior Security Engineer at Valuepoint Systems
I would rate the technical support of ArcSight Enterprise Security Manager (ESM) a nine as they are always available and responsive whenever we open a case.
Cloud Security Archirect at IBM
 

Scalability Issues

Sentiment score
7.7
Microsoft Sentinel is highly scalable, cloud-native, and integrates easily, but users should consider data ingestion costs.
Sentiment score
5.9
OpenText Enterprise Security Manager is adaptable but costly, with licensing concerns affecting budget forecasting despite user satisfaction.
There is no need to add hardware or redesign infrastructure because it is cloud-native.
Cyber Security Consultant at HR Software Solution
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
Being a SaaS solution, the scalability of Microsoft Sentinel is robust.
senior cyber security at a tech services company with 201-500 employees
It lacks some capabilities compared to other tools available in the market.
Senior Security Engineer at Valuepoint Systems
It is easy to scale, and I have not encountered any issues when we require more storage or deployment.
Cloud Security Archirect at IBM
 

Stability Issues

Sentiment score
7.8
Microsoft Sentinel is reliable with high uptime, minor outages, and strong security, despite some customization challenges.
Sentiment score
5.1
OpenText Enterprise Security Manager's stability varies by environment, requiring proper setup; recent patches improve performance but challenges persist.
I have never experienced any downtime, crashes, or performance issues with Microsoft Sentinel because it is SOC as a Service, so it maintains 100% uptime and scaling.
Infosec at a government with 10,001+ employees
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
I would rate the stability of ArcSight Enterprise Security Manager (ESM) a nine because I have not encountered significant issues, unlike other solutions that sometimes have database errors.
Cloud Security Archirect at IBM
The stability of ArcSight Enterprise Security Manager (ESM) is not very robust.
Senior Security Engineer at Valuepoint Systems
 

Room For Improvement

Microsoft Sentinel needs enhancements in integration, usability, performance, automation, and cost management to better serve users and organizations.
Users seek better reporting, UX, licensing, enhanced performance, integration, automation, AI advancements, and improved support and training.
Log ingestion and retention costs can grow quickly, and understanding which data source is driving cost is not always straightforward.
Cyber Security Consultant at HR Software Solution
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
There are complexities in calculating the right pricing tier for different customers, which makes it difficult for me as a consultant during upfront pricing.
senior cyber security at a tech services company with 201-500 employees
I would like to see the detection and response features included in the next release of ArcSight Enterprise Security Manager (ESM), as security orchestration and automation are increasingly important.
Cloud Security Archirect at IBM
The integration aspect of ArcSight Enterprise Security Manager (ESM) needs improvement.
Senior Security Engineer at Valuepoint Systems
 

Setup Cost

Microsoft Sentinel's flexible pricing can be costly, but cost-effective within the Microsoft ecosystem with optimization strategies in place.
OpenText Enterprise Security Manager is considered costly, with varied licensing options, and negotiation advised for potential discounts.
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 HR Software Solution
Microsoft Sentinel is provided at no cost, so we didn't have any issues with the cost.
Vice President, Sales, Cybersecurity at a computer software company with 51-200 employees
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
Senior Security Engineer at Valuepoint Systems
I would rate the pricing of ArcSight Enterprise Security Manager (ESM) around seven, as it varies based on features and demand, making it more affordable for larger organizations, while smaller ones might find it expensive.
Cloud Security Archirect at IBM
 

Valuable Features

Microsoft Sentinel enhances security with AI-driven threat detection, automated responses, seamless integration, and efficient threat management through playbooks and analytics.
OpenText Enterprise Security Manager offers versatility, strong vendor support, effective event correlation, and user-friendly integration for enhanced security analysis.
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
The ability to interpret data is highly valued.
Senior Security Engineer at Valuepoint Systems
The log analysis feature is particularly valuable as it allows analysts to interpret intrusion-related logs efficiently.
Cloud Security Archirect at IBM
 

Categories and Ranking

Microsoft Sentinel
Ranking in Security Information and Event Management (SIEM)
4th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
108
Ranking in other categories
Security Orchestration Automation and Response (SOAR) (2nd), Microsoft Security Suite (6th), AI-Powered Cybersecurity Platforms (6th)
OpenText Enterprise Securit...
Ranking in Security Information and Event Management (SIEM)
23rd
Average Rating
7.8
Reviews Sentiment
6.7
Number of Reviews
99
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Security Information and Event Management (SIEM) category, the mindshare of Microsoft Sentinel is 4.0%, down from 7.1% compared to the previous year. The mindshare of OpenText Enterprise Security Manager is 1.6%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Security Information and Event Management (SIEM) Mindshare Distribution
ProductMindshare (%)
Microsoft Sentinel4.0%
OpenText Enterprise Security Manager1.6%
Other94.4%
Security Information and Event Management (SIEM)
 

Featured Reviews

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.
SM
Cloud Security Archirect at IBM
Unified log analysis has strengthened incident detection and supports continuous attack simulation
I do not have any areas for improvement in ArcSight Enterprise Security Manager (ESM) as I have not delved deeply into it; overall, it is a good package. I would like to see the detection and response features included in the next release of ArcSight Enterprise Security Manager (ESM), as security orchestration and automation are increasingly important.
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900,644 professionals have used our research since 2012.
 

Comparison Review

VS
Manager, Enterprise Risk Consulting at a tech company with 1,001-5,000 employees
Jun 28, 2015
Qradar vs. ArcSight
Continuing with the SIEM posts we have done at Infosecnirvana, this post is a Head to head comparison of the two Industry leading SIEM products in the market – HP ArcSight and IBM QRadar Both the products have consistently been in the Gartner Leaders Quadrant. Both HP and IBM took over niche SIEM…
 

Top Industries

By visitors reading reviews
Manufacturing Company
11%
Financial Services Firm
11%
Computer Software Company
10%
Government
7%
Financial Services Firm
15%
Construction Company
11%
Marketing Services Firm
9%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business44
Midsize Enterprise24
Large Enterprise46
By reviewers
Company SizeCount
Small Business37
Midsize Enterprise14
Large Enterprise59
 

Questions from the Community

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...
Which is the best SIEM tool for a mid-sized financial services firm: Arcsight or Securonix?
In my market, a lot of financial companies had or have an ArcSight installation. Just because in former times it was pretty good. Now a lot of them are looking for a more effective solution due to ...
What is your experience regarding pricing and costs for ArcSight Enterprise Security Manager (ESM)?
I would rate the pricing of ArcSight Enterprise Security Manager (ESM) around seven, as it varies based on features and demand, making it more affordable for larger organizations, while smaller one...
What needs improvement with ArcSight Enterprise Security Manager (ESM)?
I do not have any areas for improvement in ArcSight Enterprise Security Manager (ESM) as I have not delved deeply into it; overall, it is a good package. I would like to see the detection and respo...
 

Also Known As

Azure Sentinel
Micro Focus ArcSight, HPE ArcSight, ArcSight
 

Overview

 

Sample Customers

Microsoft Sentinel is trusted by companies of all sizes including ABM, ASOS, Uniper, First West Credit Union, Avanade, and more.
Lake Health, U.S. Department of Health and Human Services, Bank AlJazira, Banca Intesa, and Obrela.
Find out what your peers are saying about Microsoft Sentinel vs. OpenText Enterprise Security Manager and other solutions. Updated: June 2026.
900,644 professionals have used our research since 2012.