Defend against modern attacks with cloud-native SIEM and XDR
Microsoft empowers your organization’s defenders by putting the right tools and intelligence in the hands of the right people. Combine SIEM and XDR to increase efficiency and effectiveness while securing your digital estate. Get insights across your entire organization with our cloud-native SIEM, Microsoft Sentinel. Use integrated, automated XDR to protect your end users with Microsoft 365 Defender, and secure your infrastructure with Microsoft Defender for Cloud.
Integrated threat protection with SIEM & XDR
Microsoft 365 E5, A5, F5 and G5 customers can save on Microsoft Sentinel

Industry recognition
Integrated threat protection news
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6 strategies to reduce security alert fatigue
Alert fatigue is a challenge in security monitoring. Learn how XDR from Microsoft addresses this issue.
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Forrester Total Economic Impact™ study on Microsoft Sentinel (formerly Azure Sentinel)
Get a 201 percent return on investment (ROI) with a payback period of less than six months.7
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Forrester Total Economic Impact™ study on Microsoft Defender for Cloud (formerly Azure Security Center)
Reduce your time to threat mitigation by 50 percent.8
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Rabobank strengthens protection, empowers employees
“Going with a best-of-platform security approach from Microsoft was the right choice...”
Abe Boersma, Global Head of Workplace Services.
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Increase resilience against advanced attacks
Learn how Microsoft 365 Defender and Microsoft Defender for Cloud help identify and defend against Nobelium attacks.
Additional threat protection resources
Combat sophisticated nation-state attacks
Stay ahead of advanced, persistent attacker trends. Find guidance, commentary, and insights.
Protect multi-cloud environments
Learn how Microsoft Defender for Cloud can help you protect multicloud environments.
Migrating SIEM to the cloud
Survey results reveal why more security professionals are moving to cloud-based SIEM.
Microsoft Mechanics video
Join Microsoft Security CVP Rob Lefferts for a deeper look at Microsoft Defender.
1. Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner’s research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose.
GARTNER and Magic Quadrant are registered trademarks and service marks of Gartner, Inc. and/or its affiliates in the U.S. and internationally and is used herein with permission. All rights reserved.
2. Gartner Magic Quadrant for Endpoint Protection Platforms, Peter Firstbrook | Dionisio Zumerle | Prateek Bhajanka | Lawrence Pingree | Paul Webber, 05 May 2021.
3. Gartner Magic Quadrant for Cloud Access Security Brokers, Steve Riley | Craig Lawson, 28 October 2020.
4. The Forrester New Wave™: Extended Detection and Response (XDR) Providers, Q4 2021, Allie Mellen, October 2021.
5. The Forrester Wave™: Endpoint Security Software as a Service, Q2 2021, Chris Sherman with Merritt Maxim, Allie Mellen, Shannon Fish, Peggy Dostie, May 2021.
6. The Forrester Wave™: Enterprise Email Security, Q2 2021, Joseph Blankenship, Claire O'Malley, May 2021.
7. A commissioned study conducted by Forrester Consulting, November 2020.
8. A commissioned study conducted by Forrester Consulting, February 2021.
Microsoft Sentinel is a cloud-native SIEM tool; Microsoft 365 Defender provides XDR capabilities for end-user environments (email, documents, identity, apps, and endpoint); and Microsoft Defender for Cloud provides XDR capabilities for infrastructure and multi-cloud platforms including virtual machines, databases, containers, and IoT.
Microsoft Sentinel is a cloud-native SIEM tool; Microsoft 365 Defender provides XDR capabilities for end-user environments (email, documents, identity, apps, and endpoint); and Microsoft Defender for Cloud provides XDR capabilities for infrastructure and multi-cloud platforms including virtual machines, databases, containers, and IoT.