Microsoft Defender for Business
Elevate your security
Microsoft Defender for Business delivers a comprehensive security solution to help you secure your business, allowing you to focus on what matters.
Key features
Microsoft Defender for Business is optimized to meet the needs of small and medium businesses of up to 300 users.
Microsoft Defender for Business plan and pricing
Microsoft Defender for Business
(annual subscription-auto renews)
Another way to buy
Microsoft Defender for Business is also available as part of Microsoft 365 Business Premium, a unified solution to help protect your business, bringing together best-in-class Office apps, powerful cloud services, and comprehensive security.
Industry recognition
Microsoft Defender for Business is built on the foundation of Microsoft Defender for Endpoint, and features many of the same capabilities.
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Industry antivirus tests
Our antimalware capabilities consistently achieve high scores in independent tests.
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MITRE
Microsoft leads in real-world detection in MITRE ATT&CK evaluation.
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IDC
Microsoft named a Leader in IDC MarketScape for Modern Endpoint Security for Enterprise and Small and Midsize Businesses.1
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Gartner
Gartner® names Microsoft a Leader in the 2021 Magic Quadrant™ for Endpoint Protection Platforms.2, 3
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Forrester
Microsoft Defender for Endpoint is named a Leader in The Forrester Wave™: Endpoint Security Software as a Service, Q2 2021.4, 5
Customer success stories
Martin & Zerfoss and Kite Technology Share the small business advantages of Microsoft Defender for Business

Resources
Blog
Defender for Business blog
Get caught up on all the news and details about the product.
Documentation
Technical documentation
Find everything you need to implement and run Microsoft Defender for Business.
Partner
Partner resources
Explore playbooks, webinars, and resources for partners serving small and medium businesses.
For enterprise
Microsoft Defender for Endpoint
Explore endpoint security for businesses with more than 300 users.
Frequently asked questions
Microsoft Defender for Business is an endpoint security solution that helps businesses with up to 300 employees protect against cybersecurity threats including malware and ransomware, in an easy-to-use, cost-effective package.
IT service providers can use Microsoft 365 Lighthouse to view security incidents and alerts from Defender for Business across multiple customers in a single location. Management of Defender for Business via Microsoft 365 Lighthouse will come at a later date.
Securing devices is critical to safeguarding your organization from malicious actors attempting to attack or disrupt your business. Endpoint security helps to protect, detect, and respond to these threats for desktops, laptops, and mobile devices.
Microsoft Defender Antivirus provides next-generation protection built into Windows devices and helps to protect you from viruses, malware, and potentially unwanted applications. Defender for Business includes Defender Antivirus, and extends these capabilities with threat and vulnerability management, attack surface reduction, endpoint detection and response, and automated investigation and response.
Microsoft Defender for Business
1. IDC, The IDC MarketScape: Worldwide Modern Endpoint Security for Small and Midsize Businesses 2021 Vendor Assessment, Doc #48304721. November 2021.
2. 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, express 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 mark of Gartner, Inc. and/or its affiliates in the U.S. and internationally and are used herein with permission. All rights reserved.
3. Gartner Magic Quadrant for Endpoint Protection Platforms, Peter Firstbrook | Dionisio Zumerle | Prateek Bhajanka | Lawrence Pingree | Paul Webber, 05 May 2021.
4. Forrester and Forrester Wave are trademarks of Forrester Research, Inc.
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. Availability of mobile apps varies by country/region.