Multi-regional databases follow the same principles of single regional databases in terms of charging for reads, writes, data transfer and storage. There are additional charges for multi-region databases which are outlined below and we also highlight which of the Metering Details you can reference to get more details. Find Metering Details and their associated Rates here.
Reads are only charged for the region in which the read was done.
Writes are performed to every region which has been deployed with associated charges (see Write requests).
Data is replicated to each region deployed and storage is charged for each region (See Storage).
Data Transfer is charged for transfer of data between regions and the rate depends on the kind of data replication implemented (See Data Transfer).