Different organizations have different structures and different distributions of responsibility. I could absolutely see some places having HR be the place where

Different organizations have different structures and different distributions of responsibility. I could absolutely see some places having HR be the place where metric-based policies originated, even for the IT team—and even over the objections of the head of IT. Especially if it's a place where the head of HR is a VP/C-suite, but the head of IT is just a Director. (Shockingly, not everywhere sees IT as being as important as other divisions.)