Microsoft Defender for Business

Even the smallest business can be a target for a cybersecurity attack. Get enterprise-grade endpoint protection that’s cost-effective and easy to use—and designed especially for businesses with up to 300 employees—with Microsoft Defender for Business.


Customers and IT Partners can now request the preview.

Elevate your security

As cybersecurity threats increase, you need to protect your business. Microsoft Defender for Business delivers simple, comprehensive endpoint security to help you secure your business, allowing you to focus on what matters.

Enterprise-grade endpoint protection

Security across your devices with automation and built-in intelligence to rapidly protect, detect, and respond to threats.

Easy to use

Streamlined onboarding and management experiences that provide actionable insights for ease of use.

Cost effective

Endpoint security that keeps you productive and works with your IT without compromising your budget.

Key features

Key features
The onboarding process in Microsoft Defender for Business.

Additional key features

Automated investigation and remediation

Automatically investigates alerts and helps to remediate complex threats

Threat intelligence

Proactively guard against threats with human and AI analysis of trillions of signals.

Cross platform

Extend protection across devices for Windows, MacOS, iOS, and Android.

Network protection and Web blocking

Protect against dangerous domains that host malicious content on the internet and help protect your devices from web threats and unwanted content.


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.

Customers and IT partners can now request the preview of Microsoft Defender for Business. Preview will roll out in phases to an initial set of partners and customers and will expand gradually throughout the preview. Learn more about the preview and sign-up process in the Technical documentation.

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.

Microsoft Defender for Business