[mrdomino_]

Other folks have said “mixed languages” and “monorepos” and I agree; I’ll also add that it incorporates steps like building Docker/OCI images, tarballs, potentially even deb/rpm packages all in one place, and with the same sandboxing and deterministic reproducibility as you get with the base language rules.

Like, “I want an OCI image with these contents” gets you an image with the exact files bit-for-bit from the same source, every time. At least aspirationally.