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BI Tools for SSDT is a standalone install meant for development and testing.

You can preview (render) SSRS reports within SSDT without having SSRS installed on your dev machine. This is for development only and will only be visible in SSDT. On a side note SSIS packages will function in the same manner. SSAS has no preview option - it requires a functional/full SSAS service available for deployment.

To deploy the reports you will obviously need a functional SSRS service running on the target server.