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Microsoft Security
Microsoft Defender Suite for Business Premium

Stop threats with advanced, AI-powered protection

Get unified, affordable, AI-powered threat protection, for your small and medium-sized business with Microsoft Defender Suite for Microsoft 365 Business Premium.1
Try for free See plans and pricing
Diagram of Microsoft Defender Suite for Business Premium with an AI-powered shield and features: prevention, investigation, detection, response, and user training.
OVERVIEW

Safeguard your business with industry-leading, unified security

Help your team stay ahead of cyberthreats with AI-powered protection across identities, endpoints, email, IoT, and cloud apps.
  • Detect and stop threats faster with AI-driven security. Microsoft Defender Suite for Business Premium uses advanced analytics to automatically identify and respond to cyberattacks—reducing risk while minimizing manual effort.
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  • Get real-time, context‑aware defense across your digital estate—reducing risk from compromised access, unmanaged endpoints, and unsafe app activity.
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  • Help protect your business without added complexity. Get unified end-to-end protection that simplifies management while keeping costs predictable.
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  • Get centralized alerts and threat insights across your environment with Microsoft Defender XDR. Prioritize what matters most and respond automatically to threats.
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INCLUDED CAPABILITIES

Streamline security with automated defenses

Microsoft Entra ID

Help your team reduce overexposure and stay ahead of targeted cyberattacks with automated risk-based policies and least-privilege access.
Learn more

Microsoft Defender for Endpoint

Reduce risk with less effort. Keep devices more secure and productive with continuous monitoring, vulnerability assessment, and AI‑driven threat detection.
Learn more

Microsoft Defender for Identity

Help protect user accounts and credentials by detecting suspicious activity and stopping identity attacks before they spread.
Learn more

Microsoft Defender for Office 365

Help protect email, Teams, and other collaboration tools from phishing and malware using AI-driven detection, automated actions, and guided investigations.
Learn more

Microsoft Defender for Cloud Apps

Gain clear visibility and smart control over software and AI‑driven apps. Help your team stay productive while reducing exposure from fast‑moving cloud and generative AI adoption.
Learn more

Microsoft Defender for IoT—enterprise IoT (EIoT)

Help protect connected devices with real‑time visibility and analytics across IoT assets. Reduce the pathways available to cyberattackers, strengthening resilience without adding overhead.
Learn more

Microsoft Defender XDR

Automatically disrupt cyberattacks with an extended detection and response (XDR) solution. Get unified alerts from endpoints, email, identities, and cloud services.
Learn more
PLANS AND PRICING

Add Microsoft Defender Suite to your Microsoft 365 Business Premium subscription

Get unified, powerful security features in one streamlined solution to help you stay ahead of AI‑driven attacks, identity compromise, and cloud‑first risks.

Microsoft Defender Suite for Microsoft 365 Business Premium

Bring Microsoft 365 E5 advanced security to your business at an affordable price, for up to 300 users.
$10.00
user/month, paid yearly
Buy now Try for free for 30 days
Maximum of 300 seats

Requires a Microsoft 365 Business Premium subscription
  • Threat detection, investigation, and automated response across endpoints, identities, email, and cloud
  • Advanced attack protection to stop ransomware, phishing, and credential compromise
  • Endpoint protection with real-time threat prevention, endpoint detection and response (EDR), and vulnerability management
  • Email and collaboration protection with anti-phishing, anti-malware, and safe links/attachments
  • Identity threat detection with lateral movement and access risk protection
  • Cloud app discovery, shadow IT control, and session-based access governance
  • Enterprise IoT device security with continuous visibility and threat detection
  • Vulnerability and attack surface management with prioritized remediation
  • Incident correlation for faster triage and reduced analyst workload
  • Automated policies and conditional access to contain compromised users or devices
  • AI-driven security insights to prioritize risks and strengthen overall security posture

Microsoft Defender and Purview Suites for Microsoft 365 Business Premium

Bring Microsoft 365 E5 advanced threat protection, data security, and compliance to your business for up to 300 users.
$15.00
user/month, paid yearly
Buy now Try for free for 30 days
Maximum of 300 seats

Requires a Microsoft 365 Business Premium subscription
Includes everything in Microsoft Defender Suite for Microsoft 365 Business Premium, plus:
  • Automatic classification and sensitivity labeling
  • Unified DLP across email, chat, cloud apps, and endpoints
  • Insider‑risk detection with privacy‑aware analytics
  • Advanced eDiscovery and audit for legal and compliance needs
  • Data lifecycle, retention, and records management
  • Governance tools to manage and protect sensitive data
  • Compliance Manager with tasks and audit‑ready evidence
  • Visibility into data usage, movement, and risk
  • The bundle features are equivalent to the threat protection and data security capabilities in Microsoft 365 E5. For organizations with more than 300 users, explore our enterprise offerings.6
INDUSTRY RECOGNITION

Find out why Microsoft is recognized as an industry leader

  • Gartner® Magic Quadrant™ for Endpoint Protection Platforms

    Microsoft is named a Leader in the 2025 Gartner® Magic Quadrant™ for Endpoint Protection Platforms.2
    Learn more

  • The Forrester Wave™: Zero Trust Platform Providers

    Microsoft is named a Leader in The Forrester Wave™: Zero Trust Platform Providers, Q3 2025.3, 5
    Learn more

  • The Forrester Wave™: XDR

    Microsoft is named a Leader in the Forrester Wave™: Extended Detection and Response Platforms, Q2 2024.4, 5
    Learn more

  • KuppingerCole Leadership Compass: Email Security

    Microsoft is named an Overall Leader in the KuppingerCole Leadership Compass for Email Security.
    Learn more
RESOURCES

Explore security resources

  1.
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Blog

Introducing new security and compliance add-ons

Read the announcement blog to learn more about Microsoft 365 Business Premium add-ons.
Read the blog
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Documentation

Learn more about Microsoft Defender

Explore Microsoft Defender capabilities.
Read the documentation
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Partners

Find a security partner

Discover trusted security partners with proven experience in your industry.
Find a partner
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Assessment

Access Microsoft Security assessments

Get insights into your current security posture and receive step‑by‑step guidance to help protect your organization.
Get an assessment
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Frequently asked questions

  • Microsoft Defender Suite for Microsoft 365 Business Premium brings advanced identity management, threat protection, endpoint security, identity defense, and IoT and cloud app protection—previously available only to enterprises—into your Business Premium environment. It’s built for organizations that have up to 300 seats and use Microsoft 365 Business Premium.
  • It helps detect, prevent, and respond to phishing, ransomware, and identity attacks, while reducing the risk of unauthorized access or data breaches. Microsoft Defender Suite also provides clear visibility across devices, email, identities, IoT, and cloud apps—critical for teams managing security with limited resources.
  • No. Microsoft Defender Suite provides prebuilt policies, automated threat response, AI-driven recommendations, and clear dashboards—making it easy to deploy protection and manage alerts without deep security expertise. If you work with a partner, you’ll receive the visibility and controls needed to help secure and maintain your environment.
  • Microsoft Defender Suite helps enforce safe access and provides audit-ready reporting. It works across endpoints, identities, email, IoT, and cloud apps, reducing breach risk while helping teams meet internal and regulatory security requirements. Features such as just-in-time and just-enough access, along with automated investigation and response, support least-privilege and Zero Trust practices for stronger security.
  • Microsoft Defender Suite for Microsoft 365 Business Premium delivers the same product capabilities as Microsoft Defender Suite, offering enterprise-grade security without enterprise complexity to protect devices, identities, cloud apps, IoT, and data with:
     
    • Microsoft Entra ID P2
    • Microsoft Defender XDR
    • Microsoft Defender for Endpoint P2
    • Microsoft Defender for Office 365 P2
    • Microsoft Defender for Identity
    • Microsoft Defender for Cloud Apps
    • Microsoft Defender for IoT—EIoT
     
  1. [1]
    Microsoft 365 Business Premium is designed for organizations with 300 users or fewer. For larger deployments, enterprise plans such as Microsoft 365 E3/E5 or Windows 365 Enterprise may be more appropriate.
  2. [2]
    Gartner, Magic Quadrant for Endpoint Protection Platforms, Evgeny Mirolyubov, Deepak Mishra, Franz Hinner. July 14, 2025.


    Gartner and Magic Quadrant are trademarks of Gartner, Inc., and/or its affiliates. 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.
  3. [3]
    The Forrester Wave™: Zero Trust Platforms, Forrester Research, Inc., July 10. 2025.
  4. [4]
    The Forrester Wave™: Extended Detection And Response Platforms, Forrester Research, Inc., June 2, 2024.
  5. [5]
    Forrester does not endorse any company, product, brand, or service included in its research publications and does not advise any person to select the products or services of any company or brand based on the ratings included in such publications. Information is based on the best available resources. Opinions reflect judgment at the time and are subject to change. For more information, read about Forrester’s objectivity here .
  6. [6]
    Microsoft 365 enterprise solutions are intended for businesses operating with over 300 seats.

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