- A
Upgrade all users to Microsoft 365 Business Premium
Why wrong: Business Premium includes both Intune and Defender for Office 365, but it also includes desktop Office apps which may not be needed, making it likely more expensive than adding just the required add-ons.
- B
Add Microsoft 365 Business Premium licenses as a standalone for all users
Why wrong: This is essentially the same as upgrading; it includes extra features not required.
- C
Purchase add-on subscriptions for Microsoft Intune Plan 1 and Microsoft Defender for Office 365 Plan 1
These add-ons provide exactly the required capabilities without upgrading the base plan, offering the most cost-effective solution.
- D
Switch to Microsoft 365 E3 and drop Business Basic
Why wrong: E3 includes both features but is significantly more expensive per user than Business Basic plus add-ons, and may not be cost-effective for 120 users.
MS-900 Describe Microsoft 365 pricing and support Practice Question
This MS-900 practice question tests your understanding of describe microsoft 365 pricing and support. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: microsoft Intune Plan 1 is an add-on for endpoint management.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A growing company with 120 users currently holds Microsoft 365 Business Basic licenses. They need to add endpoint management (Microsoft Intune) and advanced threat protection (Microsoft Defender for Office 365 Plan 1). They also want to keep their existing Business Basic subscriptions. What is the most cost-effective way to add these capabilities?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Purchase add-on subscriptions for Microsoft Intune Plan 1 and Microsoft Defender for Office 365 Plan 1
Option C is correct because Microsoft 365 Business Basic supports add-on subscriptions for Microsoft Intune Plan 1 and Microsoft Defender for Office 365 Plan 1, allowing the company to retain their existing licenses while adding endpoint management and advanced threat protection. This is the most cost-effective approach as it avoids the higher per-user cost of upgrading to Business Premium or switching to E3, which would include unnecessary features like desktop Office apps.
Key principle: Microsoft Intune Plan 1 is an add-on for endpoint management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Upgrade all users to Microsoft 365 Business Premium
Why it's wrong here
Business Premium includes both Intune and Defender for Office 365, but it also includes desktop Office apps which may not be needed, making it likely more expensive than adding just the required add-ons.
- ✗
Add Microsoft 365 Business Premium licenses as a standalone for all users
Why it's wrong here
This is essentially the same as upgrading; it includes extra features not required.
- ✓
Purchase add-on subscriptions for Microsoft Intune Plan 1 and Microsoft Defender for Office 365 Plan 1
Why this is correct
These add-ons provide exactly the required capabilities without upgrading the base plan, offering the most cost-effective solution.
Related concept
Microsoft Intune Plan 1 is an add-on for endpoint management.
- ✗
Switch to Microsoft 365 E3 and drop Business Basic
Why it's wrong here
E3 includes both features but is significantly more expensive per user than Business Basic plus add-ons, and may not be cost-effective for 120 users.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume they must upgrade to a higher-tier plan (like Business Premium or E3) to get Intune and Defender, overlooking that Microsoft 365 Business Basic supports targeted add-on subscriptions for specific capabilities, which is the most cost-effective path.
Detailed technical explanation
How to think about this question
Microsoft 365 Business Basic is a 'base' plan that allows add-on subscriptions for services like Intune Plan 1 (device management via MDM/MAM) and Defender for Office 365 Plan 1 (anti-phishing, Safe Links, Safe Attachments). These add-ons are licensed per user and integrate seamlessly with the existing tenant, leveraging the same Azure AD identity layer. In a real-world scenario, a company with 120 users might only need Intune for device compliance policies and Defender for email protection, avoiding the cost of full Business Premium which includes Microsoft 365 Apps for enterprise, Azure Information Protection, and other features.
KKey Concepts to Remember
- Microsoft Intune Plan 1 is an add-on for endpoint management.
- Microsoft Defender for Office 365 Plan 1 is an add-on for advanced threat protection.
- Add-on subscriptions allow granular feature acquisition without full plan upgrades.
- Business Basic can be combined with specific add-ons to meet evolving needs.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Microsoft Intune Plan 1 is an add-on for endpoint management.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Review microsoft Intune Plan 1 is an add-on for endpoint management., then practise related MS-900 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this MS-900 question test?
Describe Microsoft 365 pricing and support — This question tests Describe Microsoft 365 pricing and support — Microsoft Intune Plan 1 is an add-on for endpoint management..
What is the correct answer to this question?
The correct answer is: Purchase add-on subscriptions for Microsoft Intune Plan 1 and Microsoft Defender for Office 365 Plan 1 — Option C is correct because Microsoft 365 Business Basic supports add-on subscriptions for Microsoft Intune Plan 1 and Microsoft Defender for Office 365 Plan 1, allowing the company to retain their existing licenses while adding endpoint management and advanced threat protection. This is the most cost-effective approach as it avoids the higher per-user cost of upgrading to Business Premium or switching to E3, which would include unnecessary features like desktop Office apps.
What should I do if I get this MS-900 question wrong?
Review microsoft Intune Plan 1 is an add-on for endpoint management., then practise related MS-900 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Microsoft Intune Plan 1 is an add-on for endpoint management.
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Last reviewed: Jun 11, 2026
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