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# SIEM Replacement Made Easy (Yes, Really!)

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By [Brendan Powers](https://www.paloaltonetworks.com/blog/author/brendan-powers/?ts=markdown "Posts by Brendan Powers")  
Oct 15, 2025  
3 minutes  
[Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown)  
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[XSIAM deployment](https://www.paloaltonetworks.com/blog/tag/xsiam-deployment/?ts=markdown)

## **Transform your SOC in record time with Cortex XSIAM**

Many security leaders are ready to break free from legacy SIEMs and finally run a SOC that's unified, intelligent and efficient. They want to replace their siloed tools and manual processes with a fully integrated, autonomous SOC.

What's holding them back? Replacing a SIEM is notoriously difficult. Data onboarding can take months, and migrating correlation rules and playbooks can be brutal, unless you have the right architecture to carry you through.

With [Cortex XSIAM](https://www.paloaltonetworks.com/cortex/cortex-xsiam), replacing your existing SIEM is a smooth, prescriptive process. The average SIEM deployment takes [six months](https://www.rapid7.com/blog/post/2022/06/02/the-average-siem-deployment-takes-6-months-dont-be-average/), but with XSIAM, your team can be fully operational in three months or less. You receive a clear plan, measurable checkpoints, and AI-assisted migration tools that alleviate manual steps along the way.

**A seven‑step plan that runs in parallel**

When you work with our professional services team, the deployment starts by aligning on outcomes and a checklist for success. From there, workstreams run in parallel. See a standard deployment schedule below.

# 5 Steps to a Successful Cortex XSIAM Upgrade

![](https://www.paloaltonetworks.com/blog/wp-content/uploads/2025/10/word-image-346529-1.jpeg)

**AI-based migration assistants accelerate time to value**

Experience a completely hands-off, end-to-end deployment, exclusively developed and delivered by Palo Alto Networks Professional Services. We utilize proprietary agentic tools -- powered by AI, LLMs, and automation -- to codify patterns from hundreds of deployments, handling the entire process so your team doesn't have to.

* **OnboardX Deployment Tool** -- Automatically builds custom data models. *An Asian IT consulting firm created 25 models in about 60 minutes.*
* **MigrateX Deployment Tool** -- Maps legacy rules to Cortex XSIAM analytics. *A Canadian retailer migrated 131 rules without rebuilds.*
* **AutomateX Deployment Tool** -- Transfers playbooks in days. *A U.S. healthcare organization migrated 11 playbooks in five days.*
* **DocumentX Deployment Tool** -- Generates an as-built documentation package in about one hour. *An Eastern European national airline completed documentation in one hour instead of seven days.*

**Coverage from day one**

Speed only matters if coverage is there. Out‑of‑the‑box analytics in Cortex XSIAM covers up to 73 percent of existing SIEM rules. The platform ships with more than 10,000 detectors, more than 2,600 machine‑learning detections, and more than 1,000 automation playbooks and integrations. More than 1,000 connectors bring in telemetry with stitching and normalization already handled, and Cortex XDR adds rich EDR data on top. That means teams start with meaningful detections and focus on tuning what matters, instead of rebuilding the basics.

**Green Bay Packers: Cortex XSIAM Deployment in 79 Days**

The [Green Bay Packers](https://www.paloaltonetworks.com/customers/securing-the-green-bay-packers-through-an-ai-driven-platform-approach?utm_source=Newsletter-GTM-global-cortex&utm_medium=social) upgraded to Cortex XSIAM on a fixed calendar. The plan prioritized the right data sources and replaced rules with analytics. In deployment, they connected all of their sources, migrated all of their custom analytics, and made custom playbooks. They deployed in 79 days, reduced their MTTR from 42 minutes to 40 seconds, and saved 120 hours of time per week due to Cortex XSIAM's automation and AI. The lesson is simple. When the plan is prescriptive and automation does the groundwork, the schedule holds.

![](https://www.paloaltonetworks.com/blog/wp-content/uploads/2025/10/word-image-346529-2.jpeg)

**Unlocking SOC value faster**

Treat migration like a business project, not an open-ended rewrite. With our professional services team, the plan stays clear. Automation does the groundwork. Content arrives ready. Teams gain faster outcomes and a platform that expands as new sources and use cases come online.

**Next steps**

See the deployment flow in action and map it to your environment. Take a [self‑guided tour of Cortex XSIAM](https://www.paloaltonetworks.com/resources/infographics/xsiam-product-tour) or [schedule a session with our team](https://www.paloaltonetworks.com/cortex/request-demo).

*** ** * ** ***

## Related Blogs

### [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Product Features](https://www.paloaltonetworks.com/blog/security-operations/category/product-features/?ts=markdown), [Uncategorized](https://www.paloaltonetworks.com/blog/category/uncategorized/?ts=markdown)

[#### From ILOVEYOU to AI Defenders -- 25 Years of Email Evolution](https://www2.paloaltonetworks.com/blog/security-operations/from-iloveyou-to-ai-defenders-25-years-of-email-evolution/)

### [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Product Features](https://www.paloaltonetworks.com/blog/security-operations/category/product-features/?ts=markdown), [Use-Cases](https://www.paloaltonetworks.com/blog/security-operations/category/use-cases/?ts=markdown)

[#### Cortex ITDR: Cyber Threats in Microsoft Teams and Their Detection](https://www2.paloaltonetworks.com/blog/security-operations/cortex-itdr-cyber-threats-in-microsoft-teams-and-their-detection/)

### [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Product Features](https://www.paloaltonetworks.com/blog/security-operations/category/product-features/?ts=markdown), [Uncategorized](https://www.paloaltonetworks.com/blog/category/uncategorized/?ts=markdown)

[#### Breaking Down Security Silos: How XDL Powers Advanced Threat Operations](https://www2.paloaltonetworks.com/blog/security-operations/breaking-down-security-silos-how-xdl-powers-advanced-threat-operations/)

### [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Product Features](https://www.paloaltonetworks.com/blog/security-operations/category/product-features/?ts=markdown), [Uncategorized](https://www.paloaltonetworks.com/blog/category/uncategorized/?ts=markdown), [Use-Cases](https://www.paloaltonetworks.com/blog/security-operations/category/use-cases/?ts=markdown)

[#### Cortex Advanced Email Security -- Built for Today's AI Threats](https://www2.paloaltonetworks.com/blog/security-operations/cortex-advanced-email-security-built-for-todays-ai-threats/)

### [AI Security](https://www.paloaltonetworks.com/blog/category/ai-security/?ts=markdown), [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Product Features](https://www.paloaltonetworks.com/blog/security-operations/category/product-features/?ts=markdown)

[#### Across the Logs and Into Cortex XSIAM](https://www2.paloaltonetworks.com/blog/security-operations/across-the-logs-and-into-xsiam/)

### [Must-Read Articles](https://www.paloaltonetworks.com/blog/security-operations/category/must-read-articles/?ts=markdown), [Partner Integrations](https://www.paloaltonetworks.com/blog/security-operations/category/partner-integrations/?ts=markdown), [Product Features](https://www.paloaltonetworks.com/blog/security-operations/category/product-features/?ts=markdown), [Uncategorized](https://www.paloaltonetworks.com/blog/category/uncategorized/?ts=markdown)

[#### Flexible Security Data Management with Cortex XSIAM \& Cribl](https://www2.paloaltonetworks.com/blog/security-operations/cortex-xsiam-integration-with-cribl-brings-flexible-data-management-to-security-operations/)

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