

OpenText Enterprise Security Manager and Microsoft Sentinel compete in the enterprise security management category. While OpenText excels in customizability and integration with various platforms, Microsoft Sentinel has the upper hand due to its cloud-native architecture, automation, and seamless integration with Microsoft's ecosystem.
Features: OpenText Enterprise Security Manager stands out with its customizability, a powerful correlation engine, and strong integration with diverse platforms. Its ability to handle complex threats and provide a flexible security event management experience makes it suitable for experts. Microsoft Sentinel is noted for its cloud-native design, automation capabilities, and AI-driven threat detection. It's particularly effective for enterprises within the Microsoft ecosystem, offering comprehensive threat visibility and seamless integration.
Room for Improvement: OpenText Enterprise Security Manager needs better documentation, enhanced threat intelligence, improved user interfaces, and more responsive technical support. Microsoft Sentinel users suggest improvements in pricing clarity, expanded automation, better third-party integrations, and real-time data processing. It also requires improvements in UI navigation and strengthened threat intelligence.
Ease of Deployment and Customer Service: OpenText Enterprise Security Manager can be deployed on-premises or in hybrid cloud environments, requiring significant maintenance, which can impact deployment speed. Customers have mixed reviews about its customer service, often citing delays. Microsoft Sentinel, being cloud-native, allows for quicker deployment and benefits from integration within the Microsoft family, although users note a need for clearer support paths and training resources.
Pricing and ROI: OpenText Enterprise Security Manager's complex setup can be costly upfront, with a traditional licensing model based on events per second, making it potentially expensive. However, if fully utilized, it can offer significant ROI. Microsoft Sentinel uses a consumption-based pricing model, providing flexibility and potential cost savings through its cloud architecture, with free log ingestion from Microsoft products. This model allows for low entry costs and scalability, recognizing ROI through its integration ease and automation.
If a customer is already using Microsoft’s ecosystem, the ROI can be positive due to seamless integration.
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.
We attribute our growth to Sentinel.
Their solutions' integration simplifies resolving issues compared to those caused by third-party products.
Microsoft invests significantly in support, which is crucial for companies.
Working with a Sentinel engineer helped us tune settings effectively.
If I raise a P1 or P0 ticket, the response time is often delayed by four to eight hours.
Office 365 and Exchange are running on it, covering about 35,000 users efficiently.
There is no need to add hardware or redesign infrastructure because it is cloud-native.
As our organization uses Microsoft Azure and Defender, everything grows together, and we can integrate various features seamlessly.
It lacks some capabilities compared to other tools available in the market.
So far, we have not experienced any issues, and it has been stable from the beginning.
In the past two years, our team hasn't encountered any issues with the stability of Microsoft Sentinel from an operations perspective.
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.
The stability of ArcSight Enterprise Security Manager (ESM) is not very robust.
Log ingestion and retention costs can grow quickly, and understanding which data source is driving cost is not always straightforward.
We have some tools, such as our off-site Meraki firewalls, that have not fully integrated with Sentinel.
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.
The integration aspect of ArcSight Enterprise Security Manager (ESM) needs improvement.
It has been beneficial that Microsoft Sentinel is included as part of the Microsoft package, making it more cost-effective.
Microsoft Sentinel is not a low-cost SIEM.
Microsoft Sentinel offers more capabilities than Bastion, with a more intuitive experience.
ArcSight Enterprise Security Manager (ESM) is very cheap compared to other tools.
Microsoft Sentinel's ability to correlate data from multiple sources and its detection capabilities are essential.
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.
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.
The ability to interpret data is highly valued.
| Product | Market Share (%) |
|---|---|
| Microsoft Sentinel | 5.0% |
| OpenText Enterprise Security Manager | 1.6% |
| Other | 93.4% |

| Company Size | Count |
|---|---|
| Small Business | 38 |
| Midsize Enterprise | 22 |
| Large Enterprise | 45 |
| Company Size | Count |
|---|---|
| Small Business | 37 |
| Midsize Enterprise | 14 |
| Large Enterprise | 57 |
Microsoft Sentinel is a scalable, cloud-native, security information event management (SIEM) and security orchestration automated response (SOAR) solution that lets you see and stop threats before they cause harm. Microsoft Sentinel delivers intelligent security analytics and threat intelligence across the enterprise, providing a single solution for alert detection, threat visibility, proactive hunting, and threat response. Eliminate security infrastructure setup and maintenance, and elastically scale to meet your security needs—while reducing IT costs. With Microsoft Sentinel, you can:
- Collect data at cloud scale—across all users, devices, applications, and infrastructure, both on-premises and in multiple clouds
- Detect previously uncovered threats and minimize false positives using analytics and unparalleled threat intelligence from Microsoft
- Investigate threats with AI and hunt suspicious activities at scale, tapping into decades of cybersecurity work at Microsoft
- Respond to incidents rapidly with built-in orchestration and automation of common tasks
To learn more about our solution, ask questions, and share feedback, join our Microsoft Security, Compliance and Identity Community.
OpenText Enterprise Security Manager enables real-time threat detection through scalable and adaptable solutions, integrating seamlessly with multiple platforms for complex security scenarios across different environments.
OpenText Enterprise Security Manager offers extensive security monitoring capabilities, combining log analysis and incident management to enhance cybersecurity and compliance. Its powerful event correlation engine provides real-time alerts for rapid incident response. Users benefit from customizable dashboards and comprehensive log collection, making it a significant tool in the SIEM market. Flexible deployment options cater to both on-premises and cloud environments, supporting enterprises in managing IT infrastructure and threat detection efficiently.
What are the key features of OpenText Enterprise Security Manager?In industries such as finance, healthcare, and energy, OpenText Enterprise Security Manager is implemented for monitoring critical systems and ensuring compliance with regulatory needs. Enterprises leverage its capabilities for forensic investigations and active threat management, serving as a central hub for cybersecurity operations across diverse IT infrastructures.
We monitor all Security Information and Event Management (SIEM) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.