Before moving four hundred on-premises servers, leadership wants an inventory, a view of which servers depend on which, an Azure sizing estimate and a projected monthly cost — and then a way to actually carry the migrations out. Which service is built for that whole arc?

Microsoft Certified: Azure Fundamentals (AZ-900), objective architecture-and-services. Azure architecture and services medium

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The options

Correct Azure Migrate

Correct. It is the hub for discovery and dependency analysis, for assessments that produce sizing and cost estimates, and then for performing the migration of servers, databases and web applications.

Not correct Azure Advisor

Wrong. Advisor makes recommendations about resources you already run in Azure. It cannot see four hundred servers sitting in your own datacentre, so it has nothing to assess.

Not correct Azure Data Box

Wrong. Data Box moves bulk data offline. It has no opinion about which virtual machine size a server needs or what the estate will cost per month.

Not correct Azure Arc

Wrong for this question, though it is genuinely adjacent. Arc projects servers running elsewhere into Azure so you can govern and manage them where they are — a decision to keep them, not a plan to move them.

Why

Keep the hybrid tools apart by the verb in the requirement. Migrate assesses and moves. Arc governs what stays where it is. Data Box ships bulk data. Advisor advises on what already runs in Azure. A migration programme usually needs the first, may keep the second for whatever never moves, and reaches for the third only when the data volume defeats the network.

Where this comes from

Cited
Microsoft AZ-900 study guide skill area architecture-and-services.storage

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