Hi @ovsp,
To install SSIS, you need a SQL Server license. Depending on the tasks you want to do with SSIS, you either need Enterprise or Standard licensing. In most scenarios, Standard should be sufficient. It also means you need a SQL Server license for every machine you install SSIS on. If you install SSIS on the same machine as the database engine, SSIS "comes free" with the SQL Server license.
Regards,
Zoe Hui
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