E5 Level Security Now Available to M365 Business Premium Customers

On March 6, 2025, Microsoft announced a major security enhancement for Microsoft 365 Business Premium customers: the ability to add Microsoft 365 E5 Security as an add-on. This upgrade provides small and medium-sized businesses (SMBs) with enterprise-grade security features previously only available at the E5 level. 

With cyber threats becoming more sophisticated, this new add-on gives SMBs access to advanced tools to protect identities, devices, applications, and email—all while being cost-effective. Let’s break down what’s included, why it matters, and how to get started. 

What’s Included in the E5 Security Add-On? 

The Microsoft 365 E5 Security add-on significantly expands the security capabilities of Business Premium by introducing: 

• Microsoft Entra ID Plan 2 – Adds risk-based conditional access and identity protection powered by AI. 
• Microsoft Defender for Identity – Detects and responds to identity-based attacks in real time. 
• Microsoft Defender for Endpoint Plan 2 – Enhances threat protection, detection, and response across devices. 
• Microsoft Defender for Office 365 Plan 2 – Strengthens email and collaboration security against phishing, ransomware, and zero-day threats.
• Microsoft Defender for Cloud Apps – Provides visibility and control over cloud applications and services. 

Each of these tools integrates seamlessly into the existing Microsoft security ecosystem, allowing organizations to detect, investigate, and respond to threats more effectively. 

Why Does This Matter for SMBs?

1. Strengthened Identity Protection

With Entra ID Plan 2, SMBs gain access to risk-based conditional access policies that help block suspicious login attempts and automate security responses. Identity-based threats remain one of the top vulnerabilities for businesses, making proactive identity protection crucial.

2. Enterprise-Grade Threat Detection & Response

The E5 Security add-on provides Extended Detection and Response (XDR) capabilities, giving organizations a centralized view of threats across endpoints, email, and cloud applications. This means better threat hunting, forensic analysis, and faster incident response—features typically reserved for larger enterprises. 

3. Cost-Effective Security Upgrade

Microsoft estimates that purchasing these products separately would cost 57% more than bundling them through the E5 Security add-on. This makes it a budget-friendly option for SMBs looking to enhance security without the enterprise-level price tag. 

How to Get the E5 Security Add-On 

Business Premium customers can purchase the Microsoft 365 E5 Security add-on directly through: 

• The Microsoft Security for SMBs website 
• A Microsoft Partner (such as CloudServus!) 

CloudServus specializes in Microsoft licensing and security solutions, helping organizations choose the right configurations for cost efficiency and maximum protection. 

Final Thoughts: Is It Worth It? 

If your business handles sensitive data, manages remote or hybrid workforces, or has seen an increase in cyber threats, upgrading to E5 Security is a smart move. This add-on delivers the best-in-class security capabilities of Microsoft 365 E5 without requiring a full E5 subscription. 

For guidance on implementing Microsoft 365 E5 Security and optimizing your Microsoft licensing strategy, reach out to CloudServus. We help SMBs maximize security, minimize costs, and navigate Microsoft’s evolving licensing landscape. 

Get in touch with our team today to explore how this add-on can protect your business.