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The Microsoft SQL Server Protocols documentation contains detailed technical specifications for Microsoft protocols that are implemented and used by SQL Server to interoperate or communicate with other Microsoft products. It also contains technical specifications for extensions to industry-standard and other published protocols that are used by SQL Server. In addition, the documentation set includes a companion overview document that supplements the technical specifications with conceptual background information, overviews of inter-protocol relationships and interactions, and technical references.
Documentation for released versions of SQL Server is at SQL Server Protocols.
No preview versions of SQL Server Protocols documents are available at this time.