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Multi-Region application architecture is one of the most important aspects of any cloud application. Multi-region means having multiple regions of your application. Each region is a separate data center that contains its own database and load balancer. The databases in the different regions are not connected to each other, but they will all share the same schema, so you can use one set of queries that work across all of them. The cost of running a multi-region database can be lower than single region setups, it's still likely to be more expensive than running single region setup.