Snowflake and SQL Server Analysis Services (SSAS) are used together for enterprise-grade analytics by connecting Snowflake data warehouses to SSAS instances, enabling the creation of OLAP cubes that can be accessed through various business intelligence tools such as Power BI, Excel, and Reporting Services reports. The CData ADO.NET Provider facilitates this integration, allowing users to build semantic data models and deploy them to SSAS instances for analysis and reporting purposes.