This MS-900 practice question tests your understanding of describe cloud concepts. 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.
Your company is experiencing high costs for maintaining an on-premises email server and wants to reduce IT management overhead. Which Microsoft 365 service provides enterprise-grade email with minimal infrastructure management?
Microsoft Entra ID
Why wrong: Microsoft Entra ID is identity and access management, not email.
SharePoint Online
Why wrong: SharePoint Online is a collaboration platform, not email.
Microsoft Intune
Why wrong: Microsoft Intune is for mobile device management, not email.
Exchange Online
Exchange Online is the cloud-hosted email service in Microsoft 365.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Exchange Online
Option D is correct because Exchange Online is the cloud-based email service. Option A is wrong because Microsoft Entra ID is identity management. Option B is wrong because SharePoint Online is for collaboration and document management. Option C is wrong because Microsoft Intune is for device management.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Entra ID
Why it's wrong here
Microsoft Entra ID is identity and access management, not email.
SharePoint Online
Why it's wrong here
SharePoint Online is a collaboration platform, not email.
Microsoft Intune
Why it's wrong here
Microsoft Intune is for mobile device management, not email.
Exchange Online
Why this is correct
Exchange Online is the cloud-hosted email service in Microsoft 365.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
Identify which MS-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Describe cloud concepts — This question tests Describe cloud concepts — Read the scenario before looking for a memorised answer..
The correct answer is: Exchange Online — Option D is correct because Exchange Online is the cloud-based email service. Option A is wrong because Microsoft Entra ID is identity management. Option B is wrong because SharePoint Online is for collaboration and document management. Option C is wrong because Microsoft Intune is for device management.
Identify which MS-900 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
This MS-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the MS-900 exam.
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