My guess is that the benefit is they can write their applications in Haskell, package up the binary into a JVM application/shim (which can be templated in a baz

My guess is that the benefit is they can write their applications in Haskell, package up the binary into a JVM application/shim (which can be templated in a bazel macro) and deploy a service into something like AWS Lambda or existing infrastructure for their clients. They're a consultancy that favors Haskell https://www.tweag.io/services https://www.tweag.io/services