Match each Azure data migration tool to its use case.
Drag a concept onto its matching description — or click a concept then click the description.
Migrate databases to Azure with minimal downtime
Copy blobs or files to/from Azure Storage
Offline data transfer for large datasets
Ship physical disks to Azure datacenter
Orchestrate data movement and transformation
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Migrate: Assesses on-premises servers for migration to Azure
Azure Migrate is for server assessment, Azure Database Migration Service is for database migration, and Azure Data Box is for offline data transfer. Common confusions involve swapping assessment and migration roles.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Migrate: Assesses on-premises servers for migration to Azure
Why this is correct
Azure Migrate is the centralized hub for assessing on-premises servers — VMware, Hyper-V, physical, and other cloud workloads — for migration readiness. It uses Azure Migrate: Discovery and Assessment tools to collect performance and dependency data, then produces Azure VM sizing, cost estimates, and readiness reports. It performs discovery and planning only, not database-specific replication or minimal-downtime data movement.
Azure Database Migration Service: Migrates databases to Azure with minimal downtime
Why this is correct
Azure Database Migration Service (DMS) is a fully managed PaaS orchestrator that moves database schemas and data from on-premises sources such as SQL Server, MySQL, PostgreSQL, and MariaDB to Azure data platforms. Its online migration mode uses continuous change capture and replication to keep source and target synchronized, so application cutover can occur with minimal downtime. Offline mode is available for less time-sensitive migrations, but DMS never performs server assessment or dependency mapping.
Azure Data Box: Physically transports large amounts of data to Azure
Why this is correct
Azure Data Box is a ruggedized physical storage appliance, typically 100 TB, that Microsoft ships to your site; you copy files over SMB or NFS and return it for direct upload to Azure Storage. Its purpose is offline bulk data transfer for scenarios where uploading terabytes or petabytes over a WAN would be too slow, costly, or bandwidth-constrained. This is raw file or backup data movement, completely separate from assessing server readiness or orchestrating live database replication.
Azure Migrate: Migrates databases to Azure with minimal downtime
Why it's wrong here
Pairing Azure Migrate with minimal-downtime database migration is incorrect because Azure Migrate has no online database replication or delta-sync engine. Database-specific migrations — such as SQL Server to Azure SQL Database — require Azure Database Migration Service, or the Azure SQL migration extension, to handle schema conversion and continuous change tracking. Azure Migrate's assessment role is pre-migration planning; it does not move data to the target database during cutover.
Azure Database Migration Service: Assesses on-premises servers for migration to Azure
Why it's wrong here
Pairing Azure Database Migration Service with server assessment confuses discovery with data movement: DMS has no agents for inventorying physical or virtual servers, no dependency visualization, and no cost- or sizing logic for VMs. It begins only after a target Azure database is provisioned and focuses on migrating the schema and data from a specified source database. Server readiness and right-sizing for Azure VMs are handled by Azure Migrate's Discovery and Assessment tools instead.
Azure Data Box: Assesses on-premises servers for migration
Why it's wrong here
Using Azure Data Box to assess on-premises servers mischaracterizes its role as a purely offline data-transport device — it has no compute, no agents, and no telemetry collection for performance or dependency analysis. Assessment requires tools like the Azure Migrate appliance, which continuously gathers host metrics and application dependencies, not a physical disk returned to Azure. Data Box simply ferries large amounts of existing data; it provides no discovery or readiness output.
Go deeper
Learn chapter
Data Roles and Core Concepts
Key term
Data
Data is raw, unprocessed information, like numbers, words, or measurements, that can be stored, processed, and analyzed by computers.
Key term
Service
A service is a software component or system that performs a specific function and is available to be used by other programs or users over a network.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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