SQL Server Native Client (SNAC) is not supported beyond SQL Server 2012. Avoid using SNAC in new development work, and plan to modify applications that currently use it. The Microsoft ODBC Driver for SQL Server provides native connectivity from Windows to Microsoft SQL Server and Microsoft Azure SQL Database.
The SQL Server Native Client ODBC driver interface complies with the three defined compliance levels for ODBC (ISO, Open Group, and ODBC level 2). SQLGetFunctions reports that all ODBC functions are supported for the SQL Server Native Client ODBC driver.