# Global Database

In case that we choose to support multi AZ you can set up the `Global Database`. \
you need to define `Primary Region` and `Secondary Region`. 

#### Primary Region

It is the region that Aurora DB will has read/write DB.

#### Secondary Region 

It is the region for read Aurora DB. 

<img src="https://2166680554-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FP9VzT74ziIucCaJgfreE%2Fuploads%2FOZtZnmZE9R0TnkIonm7n%2Ffile.excalidraw.svg?alt=media&#x26;token=edc3afdb-20f7-40bb-8412-9e785de46570" alt="" class="gitbook-drawing">

### Usecase (!!Important)

* Cross-region replication takes less than 1 second