Microsoft 365 Licensing Guide: E3, E5 and E7 Comparison

What Is the Microsoft 365 License Family?

Microsoft 365 is a subscription-based service that unifies the enterprise workspace on a single platform. It spans office applications, cloud storage, identity management, endpoint security, and collaboration tools. Microsoft packages these services into a tiered licensing model designed to match different organizational maturity levels and requirements.

Enterprise licenses are available in four tiers: E1, E3, E5, and the newest addition, E7. Each tier includes everything in the tier below it and adds additional capabilities. This cumulative structure allows organizations to start with the license that fits their current needs and upgrade as requirements evolve.

This guide examines the three most frequently compared enterprise tiers — E3, E5, and E7 — in depth. We will analyze the features, security capabilities, pricing, and ideal organizational profiles for each tier side by side.

Choosing the right license is not merely a cost decision. It is a strategic choice that directly impacts an organization's security posture, AI adoption velocity, and digital transformation roadmap.

E3 License – Core Enterprise Package

Microsoft 365 E3 is the foundational building block of enterprise productivity infrastructure. It delivers the applications, cloud services, and baseline security tools that mid-to-large organizations need to run their daily operations under a single license.

Applications and Core Features

The E3 license includes Microsoft's full desktop Office suite: Word, Excel, PowerPoint, Outlook, OneNote, Access (PC only), and Publisher (PC only). Each user can install these applications on up to 5 PCs or Macs, 5 tablets, and 5 mobile devices, providing flexibility for hybrid work environments.

On the cloud services side, Exchange Online provides enterprise email, SharePoint Online delivers team sites and document management, and OneDrive for Business offers cloud storage starting at 1 TB per user and scaling up to 5 TB. Microsoft Teams serves as the hub for instant messaging, video conferencing, and collaboration, and is an integral part of the package.

E3 also includes Windows 11 Enterprise licensing, which enables centralized application of device management and enterprise security policies. Microsoft Intune for endpoint management is included within the E3 scope.

Security Features

The E3 security layer addresses most baseline enterprise requirements but does not extend to advanced threat protection:

• Azure AD P1 (Entra ID P1): Basic conditional access policies and multi-factor authentication (MFA). Provides sufficient control for verifying user identities and defining access conditions.
• Windows Defender Antivirus: Protection against known malware threats. However, endpoint detection and response (EDR) capabilities are not available in E3.
• Basic data loss prevention (DLP): Simple DLP policies can be applied across Exchange and SharePoint, but advanced classification and labeling are reserved for the E5 tier.

The E3 security structure is adequate for organizations with moderate regulatory compliance requirements and lower exposure to advanced cyber threat scenarios.

Who Is E3 For?

E3 is an ideal starting point for organizations with the following profiles:

• Organizations that need full desktop Office applications and enterprise email but do not yet require advanced security tooling
• Organizations that can operate with basic identity management and conditional access
• IT departments looking to centralize device management through Windows 11 Enterprise and Intune
• Organizations that prefer to procure security and analytics tools separately due to budget constraints
• Companies transitioning to hybrid work models and building cloud-based collaboration infrastructure

E5 License – Advanced Security and Analytics

Microsoft 365 E5 includes everything in E3 and adds a comprehensive security, compliance, and analytics layer. The decision to upgrade from E3 to E5 typically correlates directly with an organization's commitment to elevating its cybersecurity maturity.

Additional Features Over E3

E5 carries forward every E3 capability and introduces the following critical components:

• Azure AD P2 (Entra ID P2): Risk-based conditional access and Privileged Identity Management (PIM). It detects anomalies in user sign-in behavior and enables automated response policies. PIM ensures privileged roles are assigned on a time-limited, approval-required basis.
• Power BI Pro: Enterprise data visualization and business intelligence platform. The Power BI Pro license included for every user fosters a data-driven decision-making culture across the organization.
• Teams Phone System: Public Switched Telephone Network (PSTN) connectivity through Teams, enabling a full enterprise phone system. This eliminates the need for separate PBX infrastructure.
• Personal productivity analytics: Viva Insights provides detailed analyses of meeting load, focus time, and collaboration patterns to help employees and managers optimize work habits.

Microsoft Defender, Purview, and eDiscovery

The most distinguishing difference of E5 is its full Microsoft Defender suite:

• Microsoft Defender for Endpoint P2: Advanced endpoint detection and response (EDR). Provides device-level threat hunting, automated investigation, and remediation capabilities — a significant leap beyond the basic antivirus protection in E3.
• Microsoft Defender for Office 365 P2: AI-powered phishing detection, Safe Links (URL scanning), and Safe Attachments (file scanning). Delivers proactive protection against email-based threats.
• Microsoft Defender for Identity: Analyzes Active Directory signals to detect identity-based attacks such as pass-the-hash, golden ticket, and lateral movement.
• Microsoft Defender for Cloud Apps: Shadow IT discovery and control. Identifies unsanctioned cloud application usage across the organization, assesses risk, and enforces policies.

On the compliance front, E5 extends far beyond E3:

• Advanced data loss prevention (DLP): Consistent DLP policies across all Microsoft 365 services. Prevents unauthorized sharing of sensitive data including credit card numbers, personal information, and trade secrets.
• Advanced eDiscovery: Electronic evidence collection, review, and export capabilities for legal proceedings. Premium eDiscovery adds intelligent classification and analytics.
• Advanced Audit: Audit log retention for up to 10 years and detailed monitoring of critical events. An essential tool for security incident investigations and regulatory audits.

Teams Phone System

E5's inclusion of the Teams Phone System deserves particular attention. Organizations still running legacy PBX infrastructure face mounting maintenance costs and limited integration with modern collaboration tools. E5 bundles PSTN calling capabilities directly into Teams, allowing enterprises to consolidate their communication stack onto a single platform. This reduces hardware costs, simplifies administration, and gives remote workers the same calling capabilities as in-office staff.

Who Is E5 For?

E5 is designed for organizations with the following needs:

• Organizations requiring advanced cyber threat protection and operating a security operations center (SOC)
• Organizations subject to GDPR, HIPAA, or industry-specific regulations that need comprehensive compliance tooling
• Companies seeking to control shadow IT risk across their environment
• Enterprises planning to consolidate their telephony infrastructure with Teams
• Management teams looking to scale a data-driven decision-making culture organization-wide through Power BI

E7 License – AI-First Package

Microsoft 365 E7, announced on March 9, 2026, and launching on May 1, 2026, is the newest enterprise license tier. As the first new tier since E5 debuted in 2015, E7 crystallizes Microsoft's enterprise AI vision into a single package.

For an in-depth look at E7, see our Microsoft 365 E7 Guide.

Copilot, Agent 365, and Work IQ

E7 includes everything in E5 and adds five critical AI components:

• Microsoft 365 Copilot: AI-powered productivity assistant across Word, Excel, PowerPoint, Outlook, and Teams. In E7, Copilot is not an add-on purchase — it is a native part of the package. It delivers transformative productivity gains in document creation, data analysis, presentation preparation, and email management.
• Agent 365: The control plane for deploying, monitoring, managing, and securing AI agents at enterprise scale. It enables centralized governance of all agents — Microsoft, partner, and custom-built — through a unified registry.
• Work IQ: The contextual intelligence layer behind Copilot and agents. It builds a semantic graph that learns user work patterns, project relationships, and organizational dynamics to make AI more accurate and proactive.
• Copilot Cowork: A next-generation agent experience developed with Anthropic's Claude model that autonomously executes long-running, multi-step tasks. It can manage complex workflows such as meeting preparation, research compilation, and launch planning from a single request. For detailed information, see our Copilot Cowork Guide.
• Microsoft Entra Suite: Zero-trust identity management, advanced conditional access policies, and identity governance tools. It extends beyond E5's Entra ID P2 with additional capabilities such as internet access security and private network access.

AI Capabilities

E7's AI vision transforms Copilot from a chat tool into an enterprise work partner. This transformation has three fundamental dimensions:

Autonomous task execution: With Copilot Cowork, AI no longer just answers questions — it independently plans and executes multi-step tasks, obtaining user approval at checkpoints. For a client meeting preparation, it can scan previous correspondence, create a briefing document, prepare a presentation, and add preparation time to the calendar — all from a single request. Multi-model approach: Microsoft has eliminated dependence on a single AI model by building an architecture that automatically selects the most suitable model based on the nature of the task. Anthropic Claude handles advanced reasoning and multi-step tasks, while OpenAI models power content creation and general productivity tasks. Enterprise-scale agent governance: Agent 365 provides the observability, governance, and security functions — increasingly critical as the number of AI agents in an organization grows — from a single control plane. Agent performance, risk assessment, and ROI analytics can be monitored centrally.

Who Is E7 For?

E7 creates value for organizations with the following profiles:

• Organizations planning to deploy AI agents at enterprise scale and needing secure governance for those agents
• Organizations already actively using Copilot and looking to transition to autonomous task execution with Copilot Cowork
• Security-conscious enterprises seeking to advance their zero-trust maturity with the Entra Suite
• Cost-conscious organizations that would rather consolidate Copilot, Entra Suite, and Agent 365 under a single package than purchase each separately on top of E5

Feature Comparison Table

The following table provides a side-by-side comparison of the core capabilities across E3, E5, and E7:

Feature	E3	E5	E7
Office apps (Word, Excel, PowerPoint, Outlook)	✅	✅	✅
Exchange Online (enterprise email)	✅	✅	✅
SharePoint Online	✅	✅	✅
OneDrive for Business (1-5 TB)	✅	✅	✅
Microsoft Teams	✅	✅	✅
Windows 11 Enterprise	✅	✅	✅
Microsoft Intune	✅	✅	✅
Azure AD P1 (basic conditional access, MFA)	✅	✅	✅
Azure AD P2 (risk-based access, PIM)	❌	✅	✅
Defender for Endpoint P2 (advanced EDR)	❌	✅	✅
Defender for Office 365 P2 (AI phishing protection)	❌	✅	✅
Defender for Identity	❌	✅	✅
Defender for Cloud Apps (shadow IT control)	❌	✅	✅
Microsoft Purview (advanced DLP and compliance)	Basic	Advanced	Advanced
Advanced eDiscovery	❌	✅	✅
Advanced Audit	❌	✅	✅
Power BI Pro	❌	✅	✅
Teams Phone System (PSTN)	❌	✅	✅
Viva Insights (personal productivity analytics)	Basic	Advanced	Advanced
Microsoft 365 Copilot	❌	❌ (add-on purchase)	✅ (included)
Agent 365 (agent governance platform)	❌	❌	✅
Work IQ (organizational intelligence layer)	❌	❌	✅
Copilot Cowork (autonomous task execution)	❌	❌	✅
Microsoft Entra Suite (advanced identity management)	❌	❌	✅

Pricing and Cost Analysis

Microsoft 365 enterprise license pricing is a direct determinant in organizational budget planning. Microsoft has also announced price updates taking effect in July 2026.

Current and Planned Pricing

License	Current Price (user/month)	July 2026 Price (user/month)	Change
E3	$36	$39	+$3
E5	$57	$60	+$3
E7	$99 (May 1, 2026)	$99	—

Cross-Tier Price Differential Analysis

Upgrading from E3 to E5 represents an additional $21 per user per month (remaining $21 after July 2026). In return, the organization gains the full Defender suite, advanced compliance tools, Power BI Pro, Teams Phone System, and Azure AD P2. When the standalone procurement cost of these security components is considered, E5 generally presents a cost-effective package.

Upgrading from E5 to E7 requires an additional $42 per user per month ($39 after July 2026). However, understanding the true value of this differential requires calculating the standalone cost of E7's components:

Component	Standalone Cost (user/month)
Microsoft 365 E5	~$57-60
Microsoft 365 Copilot	~$30
Agent 365	~$15
Microsoft Entra Suite	~$12
Total (standalone)	~$114-117
E7 package	$99
Savings	~$15-18/user/month

This calculation reveals that E7 offers approximately 13-15% cost savings compared to procuring its components individually. Features available exclusively through E7 — such as Work IQ and Copilot Cowork — are not factored into this calculation and should be considered as additional value.

500-User Organization Scenario

Let us examine the cost differential through a concrete example using July 2026 pricing:

Scenario	Monthly Cost	Annual Cost
500 users × E3 ($39)	$19,500	$234,000
500 users × E5 ($60)	$30,000	$360,000
500 users × E7 ($99)	$49,500	$594,000
Mixed: 300 E3 + 150 E5 + 50 E7	$25,650	$307,800

The mixed licensing scenario demonstrates that organizations can optimize costs by assigning each user the license that matches their requirements. Rather than upgrading all users to the highest tier, role-based licensing is typically the most prudent strategy.

Migration Strategy

A license upgrade decision is not simply a procurement transaction — it is a strategic move that redefines an organization's security, productivity, and AI maturity. The right migration strategy optimizes cost while accelerating user adoption.

Decision Matrix

The following matrix helps determine which license tier aligns with your organization's current state:

Criterion	E3 Is Sufficient	Upgrade to E5	Upgrade to E7
Security maturity	Basic antivirus and MFA suffice	Advanced threat protection, EDR, and SIEM required	Zero trust + agent security required
Regulatory compliance	Basic DLP and audit suffice	Comprehensive GDPR/HIPAA compliance required	Advanced compliance + AI governance required
AI strategy	AI not yet on the agenda	Copilot can be purchased separately	Copilot + agent ecosystem is a strategic priority
Telephony infrastructure	Existing PBX is adequate	Teams Phone consolidation planned	Teams Phone included
Business intelligence	Power BI can be licensed separately	Power BI Pro needed organization-wide	Power BI Pro included
Agent usage	No AI agents in use	Limited pilot-level agents	Enterprise-scale agent deployment planned

Phased Migration Plan

In large organizations, upgrading all users simultaneously is both costly and risky. A phased migration approach keeps the budget under control while enabling value measurement at each stage.

Phase 1 — Assessment and Inventory (1-2 months)

Conduct a deep analysis of current license utilization during this phase. Which users are leveraging E3 features at full capacity? Which departments need advanced security tools? Which teams are running AI pilot programs? Generating data-driven answers to these questions forms the foundation for subsequent phases.

Phase 2 — Security Layer Upgrade (2-3 months)

Upgrade security teams, IT administrators, and high-risk roles (finance, human resources, senior management) to E5. Activate the Defender suite, configure advanced audit and eDiscovery tools. This phase rapidly strengthens the organization's security posture.

Phase 3 — Productivity and Analytics Expansion (2-3 months)

Bring departments that need Power BI Pro and Teams Phone System into the E5 fold. Scale Viva Insights productivity analytics across the organization. During this phase, validate that E5's value is translating into measurable business outcomes.

Phase 4 — AI Pilot Program (2-4 months)

Identify the roles that will benefit most from Copilot and AI agents: project managers, sales teams, executive assistants, and content creators. Launch an E7 pilot program for these users. Test Copilot Cowork and Agent 365's autonomous task execution capabilities against real business scenarios.

Phase 5 — Scale and Optimize (ongoing)

Expand the E7 footprint based on pilot program results. Evaluate whether users with low AI adoption rates should remain on E5. Review license distribution regularly to maintain cost optimization.

Conclusion and Recommendations

Microsoft 365 E3, E5, and E7 represent three strategic license tiers that address different levels of enterprise maturity. The right choice goes beyond meeting an organization's current needs — it shapes the digital transformation roadmap for the next two to three years.

E3 provides a solid foundation for core productivity and cloud infrastructure needs. It remains a cost-effective option for organizations where AI and advanced security are not yet on the agenda. E5 is a powerful package for organizations committed to significantly elevating their security maturity, meeting regulatory compliance requirements, and scaling a data-driven decision-making culture. With its full Defender suite, advanced compliance tools, and Power BI Pro, it represents a substantial leap from E3. E7 is designed for organizations placing AI at the center of their enterprise strategy. With Copilot, Agent 365, Work IQ, and Copilot Cowork, it is the most comprehensive package for organizations looking to build the workplace of the future today. The cost advantage it offers over purchasing its components separately makes E7 a logical choice for organizations already planning to adopt these tools.

As the July 2026 price increases approach, strategically timing license renewals presents a critical window of opportunity for organizations. The rising E3 and E5 prices will make E7's relative cost advantage even more pronounced.

At Fiboo, we provide consulting services on Microsoft 365 licensing strategy, security transformation, and AI adoption. Contact us to analyze your current license configuration and determine the optimal license mix for your organization.

Sources:

• Microsoft 365 Blog – Powering Frontier Transformation with Copilot and Agents: https://www.microsoft.com/en-us/microsoft-365/blog/2026/03/09/powering-frontier-transformation-with-copilot-and-agents/
• Microsoft – Microsoft 365 Enterprise Plans: https://www.microsoft.com/en-us/microsoft-365/enterprise/compare-office-365-plans
• Microsoft – Microsoft Agent 365: https://www.microsoft.com/en-us/microsoft-agent-365
• Microsoft Security Blog – Secure Agentic AI for Your Frontier Transformation: https://www.microsoft.com/en-us/security/blog/2026/03/09/secure-agentic-ai-for-your-frontier-transformation/
• CNBC – Microsoft Adds Higher-Priced Office Tier with Copilot AI: https://www.cnbc.com/2026/03/09/microsoft-office-365-e7-copilot-ai.html