We used Haskell in an adnetwork to filter traffic and detect traffic fraud. Railway oriented piplines are ideal for this kind of processing where Haskell prove

We used Haskell in an adnetwork to filter traffic and detect traffic fraud. Railway oriented piplines are ideal for this kind of processing where Haskell proved to be very useful. That said now we code exclusively in Rust/Go but the fraud detection is still built in Haskell.