Generally available: Custom partitioning in Azure Synapse Link for Azure Cosmos DB

Partition your Azure Cosmos DB analytical data using keys that are critical for your business logic to achieve better query and data load performance.

Partition pruning results in faster analytical queries and loads, as less data is scanned in the partitioned stores. You can also benefit from the data processing improvements if your workloads have a significant number of updates or deletes.

This capability is available for Apache Spark in Azure Synapse Analytics, now generally available in all Azure regions. To get started, please refer to our documentation.