what are the benefit of Stored procedure ?

What are the benefit of Stored procedure ?

1) Improved Performance : Database can optimize the data access plan used by procedure and cache it for subsequent reuse. 

2) Security : Stored proceudre can be individually secured within the database. A client can be granted permissions to execute SP without having any permission on the underlying tables. 

3) Easy to maintain : easier to modify a stored procedure than it is to change a hard-coded sql statement. 

4) Reduce network traffice : Sql statement can be executed in batches rather than sending multiple requests from the client