> ## Documentation Index
> Fetch the complete documentation index at: https://docs.tensor9.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cloud Spanner

> Spanner is a Google Cloud relational database that distributes data across servers and supports SQL queries and transactions across regions.

Cloud Spanner is available on Google Cloud only.

[Service Catalog](/service-adapters/catalog).