Most other GCP products can rely on their SDN to abstract away any differences between colo hardware. But this change is more a vertical through-hole change in

Most other GCP products can rely on their SDN to abstract away any differences between colo hardware. But this change is more a vertical through-hole change in the SDN itself — possibly involving, say, third-party network switches and middleboxes in their racks routing encapsulated SDN traffic. If those switches/middleboxes do enough in ASICs, they may have to literally do hardware swaps to execute this rollout.