Microsoft 365 Business Premium: New add-ons for greater security and compliance

Since September 1, 2025 Microsoft is offering new add-ons for Microsoft 365 Business Premium. This expands the popular productivity package for SMEs with additional features in the areas of Safety and Compliance expanded – with three new suite offerings and clearly defined license limits.

🔐 New add-ons at a glance

The following add-ons are now available for Microsoft 365 Business Premium:

Microsoft Defender Suite for Business Premium
Microsoft Purview Suite for Business Premium
Microsoft Defender and Purview Suites for Business Premium (Combination offer)

💡 Important: All three add-ons are on 300 subscription licenses per customer limited – analogous to the existing license limit of Microsoft 365 Business Premium.

What's inside? – The functions in detail

🛡️ Microsoft Defender Suite

Advanced protection against cyber threats with:

Endpoint protection (including Defender for Endpoint Plan 2)
Identity and cloud protection
Threat analysis & vulnerability management
Defender for Office 365 Plan 2
Azure Info Protection P2
Microsoft Entra ID Plan 2

Ideal for companies with increased protection needs or industry-specific security requirements.

🗄️ Microsoft Purview Suite

Advanced compliance and governance features:

Data Loss Protection (DLP)
Information protection & classification
Insider risk management
eDiscovery & Audit
Defender for Cloud Apps

Particularly relevant for regulated industries such as finance, Law or Health services.

🔄 Combo offer: Defender + Purview

Full functionality of both suites – uniformly licensed, centrally managed.
Offers a E5-related experience for SMEswithout having to switch to an enterprise model.

Licensing & Requirements

Requirement: Active Microsoft 365 Business Premium license
License limit: Max. 300 users per suite
Available from: September 1, 2025
Note on mixed licensing: Combining Defender for Business (standard in M365 BP) and Defender Suite may impose limitations. Full licensing of all users with Defender Suite is recommended to enable the advanced features.

Comparison of options

Here is a summary excerpt from the feature comparison:

Other specifications	M365 Business Premium	Defender Suite	Purview Suite	Defender + Purview
Defender for Business	✓
Defender for Office 365 P2		✓		✓
Defender for Identity		✓		✓
DLP & Compliance			✓	✓
eDiscovery & Audit			✓	✓
Microsoft Access ID P2		✓		✓

👉 For more information and a complete table with all functions and dependencies here more info

Frequently asked questions:

Can I switch from the current E5 Security Suite to the new Defender Suite?
Yes, switching is possible starting with the October 2025 billing cycle.

What to do if there are more than 300 users?
Microsoft recommends switching to enterprise plans such as Microsoft 365 E3/E5 or Defender for Endpoint Standalone for users with 301 or more. Temporary license limit overruns are possible, but not a permanent solution.

Looking for licensing advice?

The new add-ons offer powerful features – but only with the right licensing can they reach their full potential.
Our certified Microsoft specialists will be happy to assist you with: