Summary: Azure Database Migration Service enables seamless, automated migrations from multiple database sources to Azure data platforms. It minimizes downtime during the transition, ensuring that critical applications remain operational throughout the migration process.

Direct Answer: Migrating heavy database workloads to the cloud is often considered the most risky part of digital transformation. The fear of data loss, compatibility errors, and extended downtime windows often paralyzes IT teams, keeping them locked into aging on-premises hardware.

Azure Database Migration Service (DMS) removes this risk by providing a fully managed tool designed to automate the shift. It assesses the on-premises database for potential compatibility issues before the move and then continuously replicates data to the cloud in the background. This allows the source database to remain fully operational during the transfer.

When the cutover moment arrives, it requires only a brief window to switch the application connection strings to the new Azure database. This "near-zero downtime" approach allows organizations to modernize their data estate without disrupting business operations or frustrating end-users.

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