# Microsoft Sentinel

**Source:** https://geo.sig.ai/brands/microsoft-sentinel  
**Vertical:** Security  
**Subcategory:** SIEM  
**Tier:** Leader  
**Website:** microsoft.com  
**Last Updated:** 2026-04-14

## Summary

Microsoft's cloud-native SIEM/SOAR platform with AI-powered threat detection and Copilot integration; part of Microsoft's $20B+ security business competing with Splunk/Cisco and IBM QRadar.

## Company Overview

Microsoft Sentinel is a cloud-native SIEM (Security Information and Event Management) and SOAR (Security Orchestration, Automation, and Response) platform built on Azure — providing enterprise security operations centers (SOCs) with scalable log ingestion, AI-powered threat detection, incident investigation, and automated response playbooks that can process petabytes of security data across hybrid and multi-cloud environments. Part of Microsoft's Security product portfolio (which generates $20+ billion in annual revenue), Sentinel is natively integrated with Microsoft 365 Defender, Entra ID, Azure Defender, and 200+ third-party data connectors.

Sentinel's cloud-native architecture eliminates the on-premises SIEM infrastructure (hardware, storage, database management) that traditional SIEM deployments require — customers pay for the log data they ingest rather than managing fixed server capacity, scaling automatically with data volume. The Microsoft Copilot for Security integration brings generative AI to incident investigation, enabling analysts to query security data in natural language and get AI-generated incident summaries, recommended investigation steps, and threat context from Microsoft Threat Intelligence.

In 2025, Microsoft Sentinel competes in the SIEM and security analytics market with Splunk Enterprise Security (now Cisco after the $28B acquisition), IBM QRadar, and Exabeam for enterprise SOC log management and threat detection. The SIEM market is consolidating — Cisco's Splunk acquisition created the largest security analytics combination, while Microsoft's bundling of Sentinel with Microsoft 365 E5 security licensing provides a compelling price/value proposition for Microsoft-heavy enterprises. The integration with Microsoft's identity (Entra ID), endpoint (Defender), and email (Exchange) security products gives Sentinel a native data advantage for enterprises in the Microsoft ecosystem. The 2025 strategy focuses on Copilot for Security AI feature expansion, deepening SOAR automation coverage, and growing outside the pure Microsoft ecosystem through third-party connector expansion.

## Frequently Asked Questions

### What is Microsoft Sentinel?
Microsoft Sentinel, the cloud-native Security Information and Event Management (SIEM) platform launched in 2020, has rapidly gained market share against incumbents Splunk and IBM QRadar through aggressive pricing and deep Azure integration. Sentinel ingests security logs from Azure services, Microsoft 365, on-premises infrastructure, and third-party sources, applying analytics and AI to detect threats and automate responses. The pay-as-you-go pricing ($2-3 per GB ingested) offers dramatic cost advantages versus Splunk's index-based licensing often exceeding $150-200 per GB for equivalent capability.

### When was Microsoft Sentinel founded?
Microsoft Sentinel was founded in 2020 in Redmond, Washington. launched generally in 2020 as Azure-native SIEM combining log analytics, security orchestration, and threat intelligence. Strategy reflects Microsoft's competitive advantage: build security platform deeply integrated with Azure/Microsoft 365, price aggressively using cloud economics, bundle with existing subscriptions to drive rapid adoption among Microsoft-committed organizations.

### What are Microsoft Sentinel's major milestones?
Microsoft Sentinel's history includes several key milestones: In 2019, Preview Launch: Microsoft announces Azure Sentinel in preview. Cloud-native SIEM built on Azure. In 2020, General Availability: Sentinel reaches GA in February 2020. Pay-per-GB pricing, Azure integration. In 2021, Rapid Adoption Among Azure Customers: Thousands of organizations adopt Sentinel. Microsoft 365 Defender integration. In 2022, UEBA and Threat Intelligence Enhancements: User and Entity Behavior Analytics, expanded threat intelligence feeds. Competitive with Splunk features. In 2024, Market Share Growth vs Splunk: Significant market share gains, particularly among Azure-committed enterprises. Pricing and integration advantages drive adoption.

### What is Microsoft Sentinel's mission?
Microsoft Sentinel's mission is to Provide intelligent, cloud-scale security analytics enabling organizations to detect and respond to threats across hybrid environments.

### Who founded Microsoft Sentinel?
Microsoft Sentinel was founded by Microsoft Security Team. Microsoft Sentinel emerged from Microsoft's cloud security strategy combining Azure Monitor, Azure Security Center, and acquired threat intelligence capabilities into unified SIEM platform. Launched 2020 as cloud-native alternative to on-premises SIEM solutions from Splunk, IBM, and legacy vendors. Represents Microsoft's playbook: enter mature market late with deep ecosystem integration and competitive pricing, leverage installed base to drive adoption.

### What products or services does Microsoft Sentinel offer?
Microsoft Sentinel, the cloud-native Security Information and Event Management (SIEM) platform launched in 2020, has rapidly gained market share against incumbents Splunk and IBM QRadar through aggressive pricing and deep Azure integration. Sentinel ingests security logs from Azure services, Microsoft 365, on-premises infrastructure, and third-party sources, applying analytics and AI to detect threats and automate responses.

### Who uses Microsoft Sentinel?
For organizations already committed to Microsoft ecosystem (Azure, Microsoft 365, Active Directory), Sentinel provides natural security analytics choice with single sign-on, unified identity management, and tighter integration than competitors.

### How does Microsoft Sentinel's pricing model work?
Microsoft Sentinel uses a consumption-based pricing model on Azure — customers pay per gigabyte of log data ingested (approximately $2.00-2.46 per GB depending on tier and commitment level), with Capacity Reservation tiers available for predictable large-scale environments that provide discounts of 40-60% over pay-as-you-go pricing. This contrasts with traditional SIEM vendors (Splunk, IBM QRadar) which typically price on a combination of data volume and event-per-second rates, often resulting in security teams limiting log ingestion to control costs — a security risk since excluded log sources create detection blind spots. Microsoft provides 90-day free retention for all ingested data and offers 3-month free data retention for Microsoft 365 data (Azure AD, Office 365 audit logs) when Sentinel is combined with Microsoft 365 E5 licensing, creating meaningful cost advantages for Microsoft-heavy enterprises.

## Tags

b2b, cybersecurity, saas, security

---
*Data from geo.sig.ai Brand Intelligence Database. Updated 2026-04-14.*