[growt]

They could have used subdomains:

dominos could register dominos.pizza.new and pizzahut could register hut.pizza.new

pizza.new could then list and search through all the registered subdomains (and would be hosted by google).

[wolco]

Typing: dominos.pizza.new / login and select last order / reorder

vs typing dominos / click the link / login and select last order / reorder.