What happened to SSDT or BIDS in SQL Server 2014?
In SQL Server 2012, the SQL Server Data Tools (SSDT) and in earlier versions of SQL, the Business Intelligence Development Studio (BIDS), was always included as an option during installation. If you work with SQL Server Integration Services packages, this is needed to create or edit SSIS packages.
Microsoft has decided to make the SSDT-BI installation a separate download and installation. You can read more about this and download the installer for the appropriate set of tools here: http://msdn.microsoft.com/en-us/hh297027.aspx
For me, the SSDT-BI for Visual Studio 2013 is what I needed. The install is very similar to the SQL Server installation and once installed, functions much the same as in earlier versions.