Hi @Anne ,
Here is a blog for you to install SSIS and SSRS with VS2019.
https://tomaztsql.wordpress.com/2019/11/03/installing-ssis-ssrs-and-ssas-with-visual-studio-2019/
If you just want to use SSRS and SSIS without any develop requirement, you don't need to install Asp.net.
Regards,
Zoe
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