Blended Realms: at least two domains totally crumbled into one. Just one required case of each name at the WOW Classic Gold end.
Associated Realms: at least two domains connected to work as one super domain. Players may hold names with an addendum to imply unique domain.
With layering, it can not just adequately control the number of www.mmobc.com inhabitants in every domain of WOW Classic, yet additionally keep up a steady economy in the game.