In GitLab CE we use artifacts passing from `prepare` to `test`. We generate there an archive that weights 60MB. This given amplification effect leads to the fact that we then generate 60MB*~40 builds traffic for each commit. I think that we should think about optimizing that by: 1. Reducing the size of artifacts, 2. Building in-cache-based artifacts passing (in GitLab CI). @stanhu @pcarranza @rymai To make you aware of the potential egress cost of having it like that.