Great, so where to get started? SimpleTalk.com has posted a great beginner article that discusses Geo-Replication. You can think of Geo-Replication as either log-shipping or mirroring for the Azure SQL Database environment, but either way, one benefit is that the passive secondary databases have three distinct benefits:
- Readability! the secondaries are readable.
- Multiple passive secondaries
- A possible lower cost that the primary
You can find Simple-Talk's report at SQL Database: How to Configure Active Geo-Replication.