Google Cloud Platform uses regions, subdivided into zones, to define the geographic location of physical computing resources.
The Cloud Healthcare API supports a subset of the full list of Google Cloud Platform locations.
The Healthcare API is available in the following regions. Multi-region support is not available.
Datasets, data stores, and regions
You specify a location for storing your Cloud Healthcare API data when you create a dataset. After you create the dataset, the location cannot be changed. Data within the dataset is stored at rest in the chosen location.
The location is tied to the dataset's identity and is a permanent part of the dataset's resource name. All data stores within the dataset are assigned to the same region as the dataset.