At which level in Azure Cosmos DB can you configure multiple write regions and read regions?

The database level organizes containers and can be configured for shared throughput, but it does not expose controls for replication topology or write region selection.

Partitions are a logical data distribution mechanism within a container, determined automatically by the partition key; they are not an administrative configuration level for replication.

Containers (collections) support per-container throughput and indexing policies, but multi-region write and read region configuration is not available at this level.

Azure Cosmos DB's account level is the only level at which you configure geo-replication, multi-region writes, and read region assignments. These global distribution settings apply uniformly to all databases and containers within the account and are not configurable at a lower scope.