A lot of the performance gains you get from GCP come from taking shortcuts over private fibre. Traffic inbound to a GCP-hosted system first goes to a local poi

A lot of the performance gains you get from GCP come from taking shortcuts over private fibre. Traffic inbound to a GCP-hosted system first goes to a local point-of-presence, then makes relatively few hops to reach its destination via Google's private fibre network. You can get a discount if you let packets make their own way to the destination over the public internet, but in practice that will make sense for cost-sensitive bulk operations, rather than interactive usage.