Can someone explain sharding and the effects it has on the AH?

[Tuskamus-area-52 (Tuskamus)]

@Bilko-bloodsail-buccaneers

How is layering “soon to be gone”?

They are removing all layering by phase 2. Many realms have already had layering removed. Layering was always intended to be a temporary measure for Classic launch.

edit:

Realm Layering Update

Over the five weeks since we launched WoW Classic, we’ve continuously monitored realm populations and utilized layering when necessary to handle launch populations. As we’ve said before, we will have all realms on a single layer before introducing world bosses, and a great deal of progress has been made toward that goal. First and foremost, players have leveled up and spread out around the world. This allowed us to accommodate more players per layer, which means fewer layers required per realm.…