Microsoft MS-900 Study Guide (Retired Exam)

This guide was written while the MS-900 exam was current. It is kept for reference and no longer describes an exam you can take.

Exam Overview (Historical)

• Certification: Microsoft MS-900
• Exam Code: MS-900
• Vendor: Microsoft
• Status: Retired
• Passing Score: 700 out of 1000

Domain Breakdown (Historical)

These domains and weights describe the retired MS-900 exam as last documented on this site. For a current exam, use the outline on Microsoft Learn.

Domain 1: Describe Cloud Concepts (10-15%)

• 1.1 Describe the different types of cloud services
• 1.2 Describe the benefits of using cloud services
• 1.3 Describe the shared responsibility model

Key concepts: IaaS, PaaS, SaaS, Public/Private/Hybrid Cloud, Shared Responsibility Model, Scalability, Elasticity, High Availability

Domain 2: Describe Microsoft 365 Apps and Services (45-50%)

• 2.1 Describe Microsoft 365 productivity solutions
• 2.2 Describe collaboration solutions in Microsoft 365
• 2.3 Describe endpoint modernization concepts
• 2.4 Describe analytics capabilities in Microsoft 365

Key concepts: Microsoft Teams, SharePoint Online, OneDrive for Business, Exchange Online, Microsoft Loop, Microsoft Viva, Microsoft Copilot, Power Platform

Domain 3: Describe Security, Compliance, Privacy, and Trust (15-20%)

• 3.1 Describe identity and access management solutions
• 3.2 Describe threat protection with Microsoft Defender
• 3.3 Describe trust, privacy, and compliance solutions

Key concepts: Microsoft Entra ID, Conditional Access, Multi-Factor Authentication, Microsoft Defender for Office 365, Microsoft Defender for Endpoint, Microsoft Intune, Data Loss Prevention, Sensitivity Labels

Domain 4: Describe Microsoft 365 Pricing, Licensing, and Support (15-20%)

• 4.1 Identify Microsoft 365 pricing and billing management options
• 4.2 Identify licensing options available in Microsoft 365
• 4.3 Identify support options for Microsoft 365 services

Key concepts: Microsoft 365 Business Plans, Microsoft 365 Enterprise E3/E5, Microsoft 365 F1/F3 Frontline, Add-On Licenses, Per-User Licensing, Microsoft 365 Admin Center, Service Health Dashboard, Support Ticket Process

Practice Resources (Legacy)

Test your knowledge with our free tools:

Take our archived Microsoft MS-900 practice quiz

• CVSS Calculator: Practice scoring vulnerabilities
• Password Strength Checker: Test password security

What to Study Instead

Look at AB-900, a 45-minute exam that assesses identifying the core features and objects of Microsoft 365 services, data protection and governance tasks for Microsoft 365 and Copilot, and basic administrative tasks for Copilot and agents. Details are on the certification page. Microsoft lists an update to the English version of AB-900 on October 14, 2026, so check the study guide for changes before you schedule.

This guide is independently created for educational purposes. Microsoft trademarks belong to their respective owners. FixTheVuln is not affiliated with or endorsed by Microsoft.