With the addition of Azure Database for PostgreSQL – Hyperscale (Citus) to the Japan West region, you can now distribute your PostgreSQL database to horizontally scale queries across multiple machines using sharding. The query engine parallelizes incoming SQL queries across these servers for faster responses on large datasets. The query engine also serves applications that require greater scale and performance for typical workloads approaching or already exceeding 100 GB of data.
Learn more about the supported regions where Azure Database for PostgreSQL – Hyperscale (Citus) is available.