Tag not monitored by Microsoft.
Hi @Aladdin Elhamy ,
SSDT is backwards compatible, so you can always use the newest SSDT to design and deploy databases, models, reports, and packages that run on older versions of SQL Server.
And follow this steps to install SSDT for VS2015 :SSDT for Visual Studio (VS) 2015.
If the response helped, do "Accept Answer" and upvote it.
BR,
Mia