Explanation:
Box 1: Data Migration Assistant (DMA)
The Data Migration Assistant (DMA) helps you upgrade to a modern data platform by detecting compatibility issues that can affect database functionality when you:
Upgrade to a new version of SQL Server
Migrate to Azure SQL Database
Migrate to Azure SQL Managed Instance
DMA recommends performance and reliability improvements for your target environment and allows you to move your schema, data, and uncontained objects from your source server to your target server.
Note: Data Migration Assistant (DMA) you can spend more than 24 hours to migrate 1 TB. DMA can take 26-28 hours to migrate 700 MB.
Box 2: Azure Migrate
Azure Migrate is the recommended and most comprehensive tool for migrating on-premises virtual machines to Azure, as it provides a central hub for discovery, assessment, and migration.
It supports various VM types, including VMware, Hyper-V, and physical servers, offering both agentless and agent-based migration options and tools to help with business case generation, cost reduction, and optimized VM sizing.
Reference:
https://learn.microsoft.com/sl-si/previous-versions/sql/dma/dma-overview
https://learn.microsoft.com/en-us/azure/migrate/migrate-services-overview