Data Services VS SQL scripts

Hello,

My current client has some DS jobs scheduled. He has some SQL scripts that will run after the DS jobs were finished every night. When I asked him to convert those SQL scripts into DS jobs, he asked me provide some documentation describing the benefits / advantages that he will get if he converted those T-SQL scripts into DS jobs. Can someone please explain me the advantages that I get if use DS instead executing just T-SQL scripts in a 3rd party scheduler?

Thanks

P