Microsoft Defender for Business vs Endpoint Plan 1 vs Plan 2

Most IT teams comparing Microsoft Defender SKUs end up in one of two places. 

They overpay for a tier with features no one will ever use, or they sit on a plan that quietly leaves gaps in endpoint detection. The naming convention does not help. Defender for Business, Defender for Endpoint Plan 1, Defender for Endpoint Plan 2, and the Defender Suite all sound similar, but the capability differences between them are significant. 

Plan 1 does not include full EDR, Defender for Business does, despite being built for SMBs. Plan 2 includes threat hunting that the others cannot touch. 

Knowing which tier fits your environment is the difference between paying for protection you use and paying for a license that does not match your risk profile. 

What Microsoft Defender for Endpoint Does 

Microsoft Defender for Endpoint is Microsoft's enterprise endpoint security platform. It has evolved well beyond traditional antivirus into what the industry now calls EDR, or Endpoint Detection and Response. EDR layers behavioral monitoring, threat analytics, automated investigation, and response capabilities on top of what traditional antivirus provides.

Microsoft consistently ranks as a leader in independent EDR evaluations. Because Defender is built natively into the Microsoft 365 ecosystem, it integrates directly with the admin portals, Intune, and other Defender products across identity, email, and cloud apps.

Where it gets complicated is how Microsoft packages this protection. There are three distinct SKUs, each with different capabilities and licensing paths.

How the Three Defender SKUs Compare

Defender for Business

Defender for Business is the SMB-focused SKU, designed for organizations with up to 300 users. It is included with Microsoft 365 Business Premium and is also available as a standalone license.

This SKU does not simply mirror Plan 1. It sits between Plan 1 and Plan 2 in terms of capabilities, delivering roughly 80-85% of what Plan 2 offers. It includes:

• Next-generation antivirus
• Attack surface reduction
• Endpoint Detection and Response (EDR) in a simplified scope
• Basic vulnerability management
• Automated investigation and remediation (limited)

That covers a significant portion of what most SMBs need, and it is one of the reasons Business Premium remains a cost-effective bundle for smaller environments. 

However, Defender for Business does not include advanced threat hunting or the deeper investigation tools available in Plan 2. For organizations without dedicated security operations staff running active investigations, that trade-off is often acceptable.

Defender for Endpoint Plan 1

Plan 1 is the base-level enterprise SKU, included with Microsoft 365 E3. It covers the foundational layer of endpoint protection:

• Next-generation antivirus with cloud-delivered protection

• Attack surface reduction rules
• Device control
• Centralized management through the Defender for Endpoint portal with basic reporting and alerting

The critical distinction here is that Plan 1 does not include full EDR. No endpoint detection and response, no automated investigation, no threat hunting, and no vulnerability management. Plan 1 is endpoint protection, not endpoint detection and response.

That means Defender for Business, despite being the SMB product, includes more EDR capabilities that Plan 1 does not.

Defender for Endpoint Plan 2

Plan 2 is the full-featured enterprise endpoint security platform. It is included with Microsoft 365 E5 and the Microsoft Defender Suite add-on.

It includes everything in Plan 1, plus:

• Endpoint Detection and Response with full investigation capabilities 
• Automated investigation and response to reduce manual triage workloads
• Threat and vulnerability management for risk-based prioritization
• Advanced threat hunting for proactive investigation
• Threat analytics and intelligence dashboards

This is the tier built for organizations with dedicated security staff, compliance requirements that demand investigation capabilities, or environments where the threat landscape justifies deeper endpoint visibility.

Defender for Business vs Plan 1 vs Plan 2 Feature Comparison 

Microsoft 365 Business Premium includes Defender for Business, not Defender for Endpoint Plan 1 or Plan 2. The protection engine is the same, but the experience is simplified and capped at 300 users. Organizations that need full Plan 2 capabilities can access them through the Microsoft Defender Suite add-on, which is the most direct upgrade path from Business Premium. 

Microsoft Defender Licensing and Pricing by SKU

All three products can be purchased as standalone licenses and bolted onto any existing Microsoft 365 plan. The most cost-effective path is typically through bundling:

Why you May Already by Paying for Defender Twice

Many organizations are paying $5 to $15 per user per month for a third-party antivirus product while Defender is already included in the Microsoft 365 license they own. Before layering on additional spend, it is worth checking whether the protection you need is already in your stack but has not been configured.

Inside the Microsoft Defender Suite 

In October 2025, Microsoft rebranded "Microsoft 365 E5 Security" to "Microsoft Defender Suite." This add-on is available for Microsoft 365 Business Premium (approximately $10 per user per month) and Microsoft 365 E3 (approximately $12 per user per month).

It bundles Defender for Endpoint Plan 2, Defender for Office 365 Plan 2, Defender for Identity, Defender for Cloud Apps, and Entra ID Plan 2 into a single SKU. For organizations on Business Premium or E3 that need to elevate their security posture without moving to a full E5 license, the Defender Suite is the clearest path.

How to Deploy Microsoft Defender for Endpoint

Defender for Endpoint can be deployed through Microsoft Intune, Group Policy, custom scripts, or a third-party RMM or MDM tool. Once deployed, device telemetry including alerts, behavioral signals, and vulnerability data feeds into the Microsoft 365 Defender portal for centralized visibility across endpoint, identity, email, and cloud apps. For organizations already managing devices through Intune, enabling Defender is often a single-click deployment.

Which Defender SKU Fits your Environment

The decision comes down to three factors: organization size, security operations maturity, and compliance requirements.

• Defender for Business fits organizations under 300 users that want EDR-level protection without the need for advanced threat hunting. If Business Premium is already in the stack, this protection is included and just needs to be enabled. 

• Defender for Endpoint Plan 1 fits enterprise environments on E3 that need foundational antivirus and attack surface reduction but plan to layer on additional tools separately. Keep in mind that Plan 1 does not include full EDR, making it the most limited of the three from a detection standpoint
• Defender for Endpoint Plan 2 fits organizations that require full EDR, threat hunting, automated investigation, and vulnerability management, particularly those with compliance obligations or dedicated security operations capacity. 

What this Means for your Microsoft Defender Licensing

These three SKUs are not just different price points for the same product. They represent fundamentally different levels of endpoint security capability. The right choice depends on the environment, the risk profile, and whether the features being paid for are being used. A licensing review that maps capabilities to real needs is a worthwhile exercise before the next renewal cycle.

Sourcepass MCOE helps organizations evaluate their current Microsoft Defender coverage, identify gaps, and align licensing with the security outcomes they need.