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Microsoft Security
A trusted SIEM

Microsoft Sentinel

Secure your multicloud, multiplatform environment with an innovative security information and event management (SIEM) powered by a modern, cost-effective data lake.
Overview

Adopt a next-level SIEM

  • Empower analysts with cloud-native security orchestration, automation, and response (SOAR), user entity and behavior analytics (UEBA), threat intelligence (TI), and advanced analytics to enable more effective actions through the unified experience in Microsoft Defender.
  • Stay ahead of emergent cyberthreats using industry-leading generative AI and autonomous agents to triage, investigate, and respond faster, accelerating mean time to resolve (MTTR) and improving analyst productivity.
  • Improve economics and scale with simplified data onboarding, dynamic recommendations, robust out-of-the-box solutions, and a centralized data lake, enabling enterprise-wide visibility.
Benefits

Drive security outcomes with an innovative SIEM

Get faster and more effective detection, response, and mitigation of cyberthreats with the robust protection and cost-efficient security operations of Microsoft Sentinel.
Capabilities

Explore Microsoft Sentinel’s innovative capabilities

Industry-leading SIEM

Redefine your security operations center (SOC) with a modern, cloud-native SIEM that unifies AI, SOAR, UEBA, TI.

Cost-effective data lake

Unify and centralize security data with scalable, cost-efficient storage to enable advanced analytics, AI, and cyberthreat detection without compromising performance or budget.

Native XDR integration

Empower SOC leaders with native extended detection and response (XDR) integration, delivering unified visibility and control across SIEM and XDR to accelerate cyberthreat detection, streamline investigation, and drive operational efficiency at scale.

Enterprise-wide visibility

Gain comprehensive visibility across multicloud and multiplatform environments through more than 350 native connectors and no-code custom integrations.

Dynamic, tailored recommendations

Streamline your security operations and reduce costs with AI-driven SOC optimization—automating best practices, accelerating cyberthreat response, and helping your team focus on what matters most.

Generative AI-powered assistant for daily operations in security

Accelerate incident investigation and response with generative AI that understands your security data. Security Copilot summarizes incidents, generates Kusto Query Language (KQL) queries, and recommends next steps—reducing MTTR and boosting analyst productivity.

Cyberthreat intelligence enhanced by third-party feeds

Deliver actionable threat intelligence by unifying Microsoft’s rich repository of threat signals—empowering your SOC to detect, investigate, and respond to cyberthreats faster using enriched context, STIX/TAXII support, and AI-driven insights.
Product architecture

Sentinel data lake architecture

Optimize for the evolution of Microsoft Sentinel by leveraging a data lake architecture that builds on the cloud flexibility needed to ingest, retain, and gain security insights from any data while keeping costs down.
The integrated SOC

Unified security operations

Anticipate and stop cyberattacks with an AI-driven defense that unifies prevention, detection, and response, all in Microsoft Defender.
SIEM comparison

Why more security leaders are choosing Microsoft Sentinel

Security leaders report that legacy SIEMs and niche solutions are falling short. Modernize your SOC with AI-powered innovations from Microsoft Sentinel, a trusted SIEM.

Limitations with traditional and niche SIEM

Get a complete SIEM with Microsoft Sentinel 

Critical capabilities

Solution complexity and feature gaps
 

  • Tools work in silos

  • Gaps in features

  • Regular, time-intensive updates

  • Inefficient analyst experience

  • High training and specialization requirements

“Splunk is cumbersome and has a huge learning curve. It requires a lot of training to get there.” 
CISO, Infrastructure

Unified SOC experience with critical built-in capabilities

Deliver a smoother SecOps experience with native XDR integrations—no additional add-ons or specialized experts required.

  • Built-in AI-powered detection and response 

  • Built-in SOAR, UEBA, and TI

  • Built-in Case Management

“Going with Microsoft Sentinel was a no-brainer to adopt a more holistic approach … rather than continue with that patchwork from different vendors.”
CIO, Retail

Cyberthreat protection

High alert volume and labor-intensive investigations
 

  • Limited detection engineering

  • Lack of automation

  • False positive and alert fatigue

  • Slow mean time to detect (MTTD)/mean time to resolution (MTTR)

  • Low visibility

  • Protracted incidents

  • Lengthy investigations

“Splunk is slower to adopt in terms of adding in features, event queries, event correlation, and understanding how to make sense of all of that data.”
Security Leader, Healthcare

AI-powered, high-fidelity threat detection and investigation

Find cyberthreats in the environment with enhanced AI-powered detection, correlation, and investigation capabilities—significantly reducing false positives and MTTR.

  • Development tools for custom detections

  • Proactive threat hunting with rules enhanced by machine learning (ML)

  • Integrated Security Copilot for AI assistance

  • Robust threat intelligence and alert enrichment

  • Advanced visualization and investigation

  • AI-guided investigation and response

“By ingesting logs and alerts from our security solutions into Microsoft Sentinel, we can correlate threat analysis from multiple sources. This automation saves valuable time to resolve incidents.” 
Security Director, Telecommunications and media

Return on investment (ROI)/total cost of ownership (TCO)

Expensive, hard-to-scale platform operations
 

  • Unpredictable consumption costs

  • Additional modules required

  • On-premises infrastructure or cloud-hosted, but not cloud-native

  • Labor intensive operations

“Splunk ingestion costs are always top of mind because they get very expensive very quickly.”
CISO, Manufacturing

Flexible, cloud-native architecture with lower TCO

Get predictable, cost-efficient security to help reduce TCO.

  • Cloud-native scalability

  • Maximum flexibility

  • Efficient data management

  • Simplified operations with tailored, in-product recommendations

“The idea of a cloud-native SIEM like Microsoft Sentinel was attractive ... it offers us flexibility and the cost-effective product we need for our solution portfolio.” Information Security Engineer, Financial services

Time to value

Complex implementation with slow time to value
 

  • Insufficient migration support

  • Limited interoperability with ecosystem

  • Time-consuming custom integration and deployment

  • Lack of pre-built templates, rules, and playbooks

“If you don't have all [Palo Alto] tools, it’s difficult to get other platforms integrated.”
Director of IT Operations, Manufacturing

Rapid onboarding with pre-built solutions

Protect across clouds, platforms, and tools by using robust migration tools, an extensive content catalog, configuration recommendations, and pre-built, curated cyberthreat detection rules.

  • Supports more than 350 ready-to-use connectors

  • Codeless connector framework to build and deploy no-code custom connectors

  • Low-friction interoperability across clouds, tools, and platforms

  • Extensive library of 480+ customizable security solutions

“Microsoft Sentinel provides wide data source integration. It can collect data from Microsoft Cloud, AWS, Google Cloud, on-prem infrastructure, and third-party security tools.” Security leader, Technology

Security innovation

Insufficient roadmap vision and execution
 

  • Constrained research and development

  • Inadequate AI expertise and functionality

  • Underdeveloped features

  • Limited TI and security research professionals

“One of the challenges with Splunk is the lack of vision on their roadmap since the acquisition.” 
Security Leader, Banking

Visionary roadmap with AI and machine learning

Stay ahead of emergent cyberthreats through product development that’s focused on rapidly delivering breakthrough advances for the SOC. Microsoft prioritizes security above all else—backed by long-term investments and 10,000+ world-class security experts and engineers.
 

  • Industry leadership including generative AI, SIEM, XDR, cloud security, and unified SecOps experience

  • Deep integration of generative AI, ML, and automation across security capabilities

  • Unparalleled threat intelligence

  • Global expertise at scale

“We make use of new innovations to mitigate emergent threats as early as possible. We strongly rely on Microsoft and its security technology roadmap to help defend our company in that way, as it can develop solutions faster than we could alone.” 
Director, IT Monitoring and Security Operations Center, Manufacturing

Deployment guide

Migrate from Splunk to Microsoft Sentinel faster and more easily

Pricing

Explore plans and pricing

Microsoft Sentinel

Get the cost-efficiency of a cloud-native SIEM and modern data lake with flexible, predictable pricing to meet your evolving cybersecurity needs.
Microsoft Sentinel pricing is designed to optimize security coverage and costs, with flexible options based on the volume of data ingested into the analytics tier and data lake tier.
Industry recognition

Microsoft is recognized as a Leader in SIEM platforms

  • Forrester Wave™ for Security Analytics Platforms

    Microsoft is named a Leader in The Forrester Wave™: Security Analytics Platforms, Q2 2025 report.2
Public sector

Microsoft’s unified security operations for public sectors

Microsoft is helping public sector entities transform the SOC and safeguard digital ecosystems with a leading AI-powered solution, unparalleled threat intelligence, and expert guidance.
Customer stories

Trusted by organizations of all sizes and industries

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FAQ

Frequently asked questions

  • Microsoft Sentinel is a modern, cloud-native SIEM that unifies AI, SOAR, UEBA, TI, and a data lake that maximizes ROI. Integrated into Microsoft Defender’s SecOps experience, Microsoft Sentinel empowers analysts to anticipate and stop cyberattacks across clouds and platforms—faster and with greater precision.
  • Azure Sentinel was renamed Microsoft Sentinel to reflect the breadth of the product's capabilities and provide protection across multiple cloud solutions.
  • Microsoft Sentinel is a powerful SIEM solution with built-in SOAR capabilities.
  • Microsoft Defender XDR is a suite of tools that unifies prevention, detection, and response across endpoints, identities, email, and applications to deliver a consolidated view of threats, adaptive protection against cyberattacks, and streamlined incident response and remediation.

    Microsoft Sentinel delivers extended visibility and foundational SecOps tools with built-in SIEM, SOAR, UEBA, and TI to detect, investigate, and respond to cyberthreats efficiently across the entire digital estate.

    Both Microsoft Defender XDR and Microsoft Sentinel are fully integrated in the Microsoft Defender portal, delivering unparalleled native detection and automated response with extended visibility, flexibility, and scalability.
  • The Microsoft Sentinel data lake is designed to help optimize costs, simplify data management, and accelerate the adoption of AI in SecOps. Built into our industry-leading SIEM, this unified data lake has a cloud-native architecture. It is purpose-built for security—organizing diverse data types across assets, identities, activities, TI, and content for greater visibility and contextual awareness. Learn more.
    .
  • No, Microsoft Sentinel is designed to ingest and analyze security data from a wide variety of sources across the multicloud, multiplatform environment. Microsoft Sentinel integrates with more than 350 different solutions through connectors supported by Microsoft and third-party partners.
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  1. [1]
    The Total Economic Impact™ Of Microsoft Sentinel: Cost Savings And Business Benefits Enabled By Microsoft Sentinel, a commissioned study by Forrester Consulting, March 2024.

    To understand benefits, costs, and risks, Forrester interviewed four customers with experience using Microsoft Sentinel. For the purposes of this study, Forrester aggregated the results from these customers into a single composite organization.
  2. [2]
    The Forrester Wave™: Security Analytics Platforms Q2 2025, Allie Mellen, Stephanie Balaouras, Katie Vincent, and Michael Belden. June 24, 2025.

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