MS-900 Cheat Sheet

#	Domain	Weight	Questions	Practice
1.0	Describe cloud concepts Cloud concepts questions test the IaaS/PaaS/SaaS model, shared responsibility, cloud economic benefits and the public/private/hybrid deployment models.	—	162	Practice →
3.0	Describe security, compliance, privacy, and trust in Microsoft 365 Describe security, compliance, privacy, and trust in Microsoft 365 questions on this certification test your ability to deploy and manage describe security, compliance, privacy, and trust in microsoft 365 concepts in scenario-based situations.	—	269	Practice →
4.0	Describe Microsoft 365 pricing and support Describe Microsoft 365 pricing and support questions on this certification test your ability to deploy and manage describe microsoft 365 pricing and support concepts in scenario-based situations.	—	150	Practice →

Domain

Weight

Questions

Practice

1.0

Describe cloud concepts

Cloud concepts questions test the IaaS/PaaS/SaaS model, shared responsibility, cloud economic benefits and the public/private/hybrid deployment models.

—

162

Practice →

3.0

Describe security, compliance, privacy, and trust in Microsoft 365

Describe security, compliance, privacy, and trust in Microsoft 365 questions on this certification test your ability to deploy and manage describe security, compliance, privacy, and trust in microsoft 365 concepts in scenario-based situations.

—

269

Practice →

4.0

Describe Microsoft 365 pricing and support

Describe Microsoft 365 pricing and support questions on this certification test your ability to deploy and manage describe microsoft 365 pricing and support concepts in scenario-based situations.

—

150

Practice →

Domain Quick Reference

1.0Describe cloud concepts

Cloud concepts questions test the IaaS/PaaS/SaaS model, shared responsibility, cloud economic benefits and the public/private/hybrid deployment models.

Key concepts

✓IaaS, PaaS and SaaS responsibilities and real-world examples.
✓Public, private, hybrid and community cloud deployment models.
✓CapEx vs OpEx trade-offs and the economic case for cloud.
✓The shared responsibility model between Microsoft and the customer.

Watch out for

⚠IaaS gives you infrastructure control; SaaS gives you only the application.
⚠Hybrid cloud combines on-premises and public cloud — not two public clouds.
⚠The customer is always responsible for data and identity even in SaaS.
⚠CapEx is upfront spend; OpEx is ongoing spend — cloud shifts most costs to OpEx.

3.0Describe security, compliance, privacy, and trust in Microsoft 365

Key concepts

✓Core Describe security, compliance, privacy, and trust in Microsoft 365 concepts and how they apply in real-world cloud scenarios.
✓How to deploy describe security, compliance, privacy, and trust in microsoft 365 correctly and verify the outcome.
✓Troubleshooting describe security, compliance, privacy, and trust in microsoft 365 issues by interpreting error output and system state.
✓Cloud best practices and Describe security, compliance, privacy, and trust in Microsoft 365 design trade-offs tested by this certification.

Watch out for

⚠Selecting the most expensive service when a simpler managed option meets the requirement.
⚠Forgetting that cloud resources must be explicitly secured — defaults are rarely secure.
⚠Choosing a global service fix when the issue is region-specific.
⚠Overlooking cost implications of cross-region data transfer in architecture questions.

4.0Describe Microsoft 365 pricing and support

Describe Microsoft 365 pricing and support questions on this certification test your ability to deploy and manage describe microsoft 365 pricing and support concepts in scenario-based situations.

Key concepts

✓Core Describe Microsoft 365 pricing and support concepts and how they apply in real-world cloud scenarios.
✓How to deploy describe microsoft 365 pricing and support correctly and verify the outcome.
✓Troubleshooting describe microsoft 365 pricing and support issues by interpreting error output and system state.
✓Cloud best practices and Describe Microsoft 365 pricing and support design trade-offs tested by this certification.

Watch out for

⚠Selecting the most expensive service when a simpler managed option meets the requirement.
⚠Forgetting that cloud resources must be explicitly secured — defaults are rarely secure.
⚠Choosing a global service fix when the issue is region-specific.
⚠Overlooking cost implications of cross-region data transfer in architecture questions.

Exam Day Reminders

→Read every question stem fully — look for qualifiers like 'MOST likely,' 'BEST,' or 'EXCEPT.'

→Flag uncertain questions and come back — don't waste time on one question.

→Eliminate obviously wrong options first, then choose between remaining ones.

→Trust your first instinct unless you have a specific reason to change.

→For MS-900, scenarios typically have one clearly best answer — look for the option that matches the specific constraints in the question.

#	Domain	Weight	Questions	Practice
1.0	Describe cloud concepts Cloud concepts questions test the IaaS/PaaS/SaaS model, shared responsibility, cloud economic benefits and the public/private/hybrid deployment models.	—	162	Practice →
3.0	Describe security, compliance, privacy, and trust in Microsoft 365 Describe security, compliance, privacy, and trust in Microsoft 365 questions on this certification test your ability to deploy and manage describe security, compliance, privacy, and trust in microsoft 365 concepts in scenario-based situations.	—	269	Practice →
4.0	Describe Microsoft 365 pricing and support Describe Microsoft 365 pricing and support questions on this certification test your ability to deploy and manage describe microsoft 365 pricing and support concepts in scenario-based situations.	—	150	Practice →

Domain

Weight

Questions

Practice

1.0

Describe cloud concepts

Cloud concepts questions test the IaaS/PaaS/SaaS model, shared responsibility, cloud economic benefits and the public/private/hybrid deployment models.

—

162

Practice →

3.0

Describe security, compliance, privacy, and trust in Microsoft 365

—

269

Practice →

4.0

Describe Microsoft 365 pricing and support

Describe Microsoft 365 pricing and support questions on this certification test your ability to deploy and manage describe microsoft 365 pricing and support concepts in scenario-based situations.

—

150

Practice →

Domain Quick Reference

1.0Describe cloud concepts

Cloud concepts questions test the IaaS/PaaS/SaaS model, shared responsibility, cloud economic benefits and the public/private/hybrid deployment models.

Key concepts

✓IaaS, PaaS and SaaS responsibilities and real-world examples.
✓Public, private, hybrid and community cloud deployment models.
✓CapEx vs OpEx trade-offs and the economic case for cloud.
✓The shared responsibility model between Microsoft and the customer.

Watch out for

⚠IaaS gives you infrastructure control; SaaS gives you only the application.
⚠Hybrid cloud combines on-premises and public cloud — not two public clouds.
⚠The customer is always responsible for data and identity even in SaaS.
⚠CapEx is upfront spend; OpEx is ongoing spend — cloud shifts most costs to OpEx.

3.0Describe security, compliance, privacy, and trust in Microsoft 365

Key concepts

✓Core Describe security, compliance, privacy, and trust in Microsoft 365 concepts and how they apply in real-world cloud scenarios.
✓How to deploy describe security, compliance, privacy, and trust in microsoft 365 correctly and verify the outcome.
✓Troubleshooting describe security, compliance, privacy, and trust in microsoft 365 issues by interpreting error output and system state.
✓Cloud best practices and Describe security, compliance, privacy, and trust in Microsoft 365 design trade-offs tested by this certification.

Watch out for

⚠Selecting the most expensive service when a simpler managed option meets the requirement.
⚠Forgetting that cloud resources must be explicitly secured — defaults are rarely secure.
⚠Choosing a global service fix when the issue is region-specific.
⚠Overlooking cost implications of cross-region data transfer in architecture questions.

4.0Describe Microsoft 365 pricing and support

Describe Microsoft 365 pricing and support questions on this certification test your ability to deploy and manage describe microsoft 365 pricing and support concepts in scenario-based situations.

Key concepts

✓Core Describe Microsoft 365 pricing and support concepts and how they apply in real-world cloud scenarios.
✓How to deploy describe microsoft 365 pricing and support correctly and verify the outcome.
✓Troubleshooting describe microsoft 365 pricing and support issues by interpreting error output and system state.
✓Cloud best practices and Describe Microsoft 365 pricing and support design trade-offs tested by this certification.

Watch out for

⚠Selecting the most expensive service when a simpler managed option meets the requirement.
⚠Forgetting that cloud resources must be explicitly secured — defaults are rarely secure.
⚠Choosing a global service fix when the issue is region-specific.
⚠Overlooking cost implications of cross-region data transfer in architecture questions.

Exam Day Reminders

→Read every question stem fully — look for qualifiers like 'MOST likely,' 'BEST,' or 'EXCEPT.'

→Flag uncertain questions and come back — don't waste time on one question.

→Eliminate obviously wrong options first, then choose between remaining ones.

→Trust your first instinct unless you have a specific reason to change.

→For MS-900, scenarios typically have one clearly best answer — look for the option that matches the specific constraints in the question.

MS-900 Exam Blueprint — At a Glance

Domain Quick Reference

1.0Describe cloud concepts

3.0Describe security, compliance, privacy, and trust in Microsoft 365

4.0Describe Microsoft 365 pricing and support

Exam Day Reminders

More MS-900 resources

MS-900 Cheat Sheet

MS-900 Exam Blueprint — At a Glance

Domain Quick Reference

1.0Describe cloud concepts

3.0Describe security, compliance, privacy, and trust in Microsoft 365

4.0Describe Microsoft 365 pricing and support

Exam Day Reminders

More MS-900 resources