For me, it's usually when I have more than three or four languages in a single codebase and there's codegen (e.g. protobuf, GraphQL, etc) involved. It's nice to

For me, it's usually when I have more than three or four languages in a single codebase and there's codegen (e.g. protobuf, GraphQL, etc) involved. It's nice to be able to `bazel test //...` a whole repo, and building minimal, reproducible Docker images becomes comparatively straightforward. That said, I've never made the leap in using Bazel for frontend stuff, I always use NPM/pnpm/yarn without any Bazel trimmings.