It's a way to write scientific reports, or other documents integrating Julia code chunks, from inside your current IDE (Juno, VSCodium etc). There's no need for

It's a way to write scientific reports, or other documents integrating Julia code chunks, from inside your current IDE (Juno, VSCodium etc). There's no need for an external server, like Jupyter. The code execution relies on the IDE's REPL and the locally installed instance of Julia. The reports can be exported to various formats - HTML, PDF etc. In the R ecosystem it's similar to using RMarkdown.