Azure SQL replication

Azure SQL provides the replication of the database to other regions to make them highly available. Replication can be done to any region. However, an architect should choose a peer region for replication. These peer regions are a minimum of 300 miles apart and are still connected with high-speed networks. These peer regions are also patched one at a time, and so there is no risk that the patch will happen in parallel to these regions.

The data in the replicated site can be made read-available to the applications.