I used to work in cluster networking, before I became an SRE. Near as I can tell, no names have been switched around in this paper, and it covers all of the major generations of Google cluster networks up to a fairly recent point in time.

I used to work in platforms (not networking, but we worked pretty closely with them) and the information in the paper was accurate and surprisingly complete.

Been working on this stuff since the beginning. Looks right to me.