Explanation

Returning Data by Using OUTPUT Parameters
If you specify the OUTPUT keyword for a parameter in the procedure definition, the stored procedure can return the current value of the parameter to the calling program when the stored procedure exits.
SQL Server stored procedures, views and functions are able to use the WITH ENCRYPTION option to disguise the contents of a particular procedure or function from discovery.
Native Compilation of Tables and Stored Procedures
In-Memory OLTP introduces the concept of native compilation. SQL Server can natively compile stored procedures that access memory-optimized tables. SQL Server is also able to natively compile memory-optimized tables. Native compilation allows faster data access and more efficient query execution than interpreted (traditional) Transact-SQL. Native compilation of tables and stored procedures produce DLLs.
References: https://technet.microsoft.com/en-us/library/ms187004(v=sql.105).aspx
https://msdn.microsoft.com/en-us/library/dn249342.aspx