> What products/services does Julia Computing sell to justify that Series A? The article doesn't mention anything.
That's the entire second paragraph of the article. JuliaHub is a paid cloud computing service for running Julia code and JuliaSim/JuliaSPICE/Pumas are paid domain-specific modeling and simulation products. See also some of the other comments here from Keno[1] and Chris Rackauckas[2]: