The correct choice is a staged migration, which moves mailboxes in batches to minimize user impact during Exchange migration. This approach spreads the migration workload over time, allowing you to test and validate each batch before proceeding, so users in later batches remain fully functional in the on-premises environment until their turn. On the MS-102 exam, this question tests your understanding of migration strategies under the “Plan a migration” objective, often appearing as a scenario where you must balance continuity with scale. A common trap is selecting a cutover migration, which moves all mailboxes at once and causes a hard cutover with potential downtime and user confusion. Remember the key distinction: staged is batch-by-batch, cutover is all-at-once. Memory tip: think “Staged = Staggered” to recall that batches spread the impact over time.
MS-102 Deploy and manage a Microsoft 365 tenant Practice Question
This MS-102 practice question tests your understanding of deploy and manage a microsoft 365 tenant. 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.
You are planning a Microsoft 365 tenant migration from an on-premises Exchange environment. You need to minimize the impact on end users during the migration. Which migration approach should you use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Perform a staged migration to move mailboxes in batches.
A staged migration allows you to move mailboxes in batches, which minimizes end-user disruption by spreading the migration workload over time and enabling you to test and validate each batch before proceeding. This approach is ideal for organizations with many mailboxes that need to maintain continuity, as users in later batches remain fully functional in the on-premises environment until their turn.
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.
✓
Perform a staged migration to move mailboxes in batches.
Why this is correct
Staged migration moves users in batches, minimizing impact.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Deploy a hybrid Exchange configuration.
Why it's wrong here
Hybrid deployment is more complex and not specifically designed to minimize user impact during migration.
✗
Perform a cutover migration to move all mailboxes at once.
Why it's wrong here
Cutover migration causes a complete switchover, affecting all users simultaneously.
✗
Use an IMAP migration to migrate only email data.
Why it's wrong here
IMAP migration does not migrate calendar, contacts, or tasks, and does not minimize impact.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'hybrid configuration' as a migration method rather than a coexistence state, or they assume 'cutover' is faster and thus less impactful, when in reality it causes the most disruption due to the all-at-once cutover.
Detailed technical explanation
How to think about this question
Staged migration uses the Exchange Admin Center (EAC) or PowerShell to create migration batches, each moving up to 1,000 mailboxes, and leverages the Migration Service to synchronize data incrementally before final cutover. Under the hood, it uses the Exchange Web Services (EWS) protocol to pull mailbox content from the on-premises Exchange 2003/2007/2010 servers, and it automatically converts mail-enabled users to mailboxes in Exchange Online, preserving user logon and email flow during the process.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
Deploy and manage a Microsoft 365 tenant — This question tests Deploy and manage a Microsoft 365 tenant — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Perform a staged migration to move mailboxes in batches. — A staged migration allows you to move mailboxes in batches, which minimizes end-user disruption by spreading the migration workload over time and enabling you to test and validate each batch before proceeding. This approach is ideal for organizations with many mailboxes that need to maintain continuity, as users in later batches remain fully functional in the on-premises environment until their turn.
What should I do if I get this MS-102 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Variation 1. Your organization is migrating from on-premises Exchange to Exchange Online. You need to ensure that users can access their mailboxes during the migration with minimal interruption. Which migration method should you use?
easy
✓ A.Minimal hybrid migration.
B.Cutover migration.
C.Staged migration.
D.IMAP migration.
Why A: Option B is correct because a minimal hybrid migration allows you to move mailboxes in batches with minimal downtime. Option A is wrong because cutover migration requires all mailboxes to be moved at once, causing interruption. Option C is wrong because an IMAP migration does not preserve calendar and contacts. Option D is wrong because a staged migration is for multiple batches but requires coexistence.
Last reviewed: Jun 24, 2026
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