Queen Victoria’s own wedding cake, eighteen years earlier, was three yards wide [2.7 m] and weighted 300 pounds [136 kg] but had only a single tier. Girls used to put pieces of wedding cake ...
See peering and IXP. Tier 2 networks peer with some networks without fees but pay to reach a large portion of the Internet. Tier 3 networks always pay fees to obtain access to the larger backbones.