About Microsoft Fabric DWH
The T-SQL warehouse inside Microsoft Fabric, sitting directly on OneLake.
Microsoft Fabric was announced at Build in May 2023 and reached general availability in November 2023 as a unified SaaS analytics platform on Azure. The Data Warehouse experience is one of seven workloads in Fabric, alongside Data Engineering (Spark notebooks and lakehouses), Data Factory (pipelines and dataflows), Real-Time Intelligence, Data Science, Databases and Power BI. All of them write to and read from the same store: OneLake, a single tenant-wide data lake built on Delta Parquet, with shortcuts that let one workspace point at data physically held in another without copying it.
The Fabric Data Warehouse itself is a fully managed, serverless T-SQL warehouse that runs queries directly against Delta tables in OneLake. It speaks the SQL Server T-SQL surface, supports cross-database queries between warehouses and lakehouses in the same workspace, and pairs natively with Power BI through Direct Lake mode, where reports query Delta files in OneLake without an import step or a DirectQuery round-trip. Billing runs on capacity units (CU) bought as a Fabric capacity (F2 through F2048 SKUs, or shared with the Power BI Premium P-SKUs), so warehouse compute, Spark, pipelines and Power BI rendering all draw from the same pool. For Microsoft-shop teams in BE and NL who already have Power BI Premium and Azure SQL on the floor, Fabric is the natural place to land the rest of the business so Direct Lake reports stop being demos and start being the actual finance and sales boards.