- A
Microsoft 365 E5 Security add-on only
Why wrong: This add-on provides Defender for Office 365 Plan 2 and other security features, but does not include eDiscovery (Premium) which requires the Compliance add-on.
- B
Microsoft 365 E5 Compliance add-on only
Why wrong: This add-on provides eDiscovery (Premium) and compliance features, but does not include Defender for Office 365 Plan 2.
- C
Both Microsoft 365 E5 Security and Microsoft 365 E5 Compliance add-ons
Both add-ons are required because they each cover separate advanced capabilities: Security for Defender Plan 2 and Compliance for eDiscovery (Premium).
- D
Upgrade all users to Microsoft 365 E5
Why wrong: While E5 includes both, it replaces Business Premium and may cost more than adding the two add-ons to existing subscriptions.
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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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 company with 500 Microsoft 365 Business Premium users needs to add Microsoft Defender for Office 365 Plan 2 (advanced threat protection) and eDiscovery (Premium) for legal investigations. They want to keep their existing Business Premium subscriptions to retain current features. Which add-on licenses are required?
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
Both Microsoft 365 E5 Security and Microsoft 365 E5 Compliance add-ons
Microsoft 365 Business Premium includes basic security and compliance features, but Microsoft Defender for Office 365 Plan 2 requires the Microsoft 365 E5 Security add-on, and eDiscovery (Premium) requires the Microsoft 365 E5 Compliance add-on. Since both advanced capabilities are needed, both add-ons are required to supplement the existing Business Premium subscriptions without upgrading to full E5.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Microsoft 365 E5 Security add-on only
Why it's wrong here
This add-on provides Defender for Office 365 Plan 2 and other security features, but does not include eDiscovery (Premium) which requires the Compliance add-on.
- ✗
Microsoft 365 E5 Compliance add-on only
Why it's wrong here
This add-on provides eDiscovery (Premium) and compliance features, but does not include Defender for Office 365 Plan 2.
- ✓
Both Microsoft 365 E5 Security and Microsoft 365 E5 Compliance add-ons
Why this is correct
Both add-ons are required because they each cover separate advanced capabilities: Security for Defender Plan 2 and Compliance for eDiscovery (Premium).
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Upgrade all users to Microsoft 365 E5
Why it's wrong here
While E5 includes both, it replaces Business Premium and may cost more than adding the two add-ons to existing subscriptions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume Microsoft 365 E5 Security and Compliance add-ons are bundled or that one add-on covers both advanced security and compliance needs, but in reality each add-on is specific to its domain and both are required for the stated requirements.
Detailed technical explanation
How to think about this question
Microsoft 365 Business Premium includes Exchange Online Protection and basic eDiscovery (Standard), but Defender for Office 365 Plan 2 adds advanced threat hunting, automated investigation, and response capabilities, while eDiscovery (Premium) provides advanced legal hold, review sets, and predictive coding. These add-ons are licensed per user and stack on top of the base Business Premium subscription, allowing granular feature enablement without changing the core plan.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Both Microsoft 365 E5 Security and Microsoft 365 E5 Compliance add-ons — Microsoft 365 Business Premium includes basic security and compliance features, but Microsoft Defender for Office 365 Plan 2 requires the Microsoft 365 E5 Security add-on, and eDiscovery (Premium) requires the Microsoft 365 E5 Compliance add-on. Since both advanced capabilities are needed, both add-ons are required to supplement the existing Business Premium subscriptions without upgrading to full E5.
What should I do if I get this MS-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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