As announced at Ignite 2020, Azure Synapse Link now has preview support for querying Azure Cosmos DB data with Synapse SQL serverless in addition to the existing support for Synapse Apache Spark.
Using Synapse SQL serverless, you can now run analytical T-SQL queries over data in Azure Cosmos DB in place within seconds. These queries can be used to build rich near real-time dashboards using Power BI integration with Azure Synapse Analytics. This new feature enhances the capability of Azure Synapse Link and gives you a wide range of business intelligence and ad-hoc querying tools via the T-SQL interface.