What is the purpose of using the SQL Managed Instance link feature during migration?

Using the SQL Managed Instance link feature during migration primarily serves to minimize downtime during the migration process. This feature allows for a seamless transition by enabling the source database to continue operating while data is being migrated to the SQL Managed Instance.

When migrating databases, one of the biggest concerns is the potential downtime experienced by applications and users. By utilizing the SQL Managed Instance link, you can set up a continuous data synchronization between the source and target instances. This means that the operation and availability of the source database remain intact, and any changes made to the source can be propagated to the target instance in real-time or near-real-time. As a result, once the migration is complete, the final cutover can happen with minimal disruption to services.

Other options may suggest benefits of the link feature, but minimizing downtime is its primary function during the migration process. This strategy is particularly valuable for mission-critical applications where availability is essential.