Blizzard vs. Private Servers

11/13/2018 07:41 AMPosted by Nufan
Blizzard isn't sharding because they have to.
Blizzard is sharding because sharding will save them money.

This.

The reason blizzard promotes sharding is more of killing multiple birds with the same stone, primarily the bird of money. You see blizzards datacenters are all designed around cloud architecture as it incredibly cost effective when you have older hardware since you can load balance very easily. Nostalrius had monolithic servers that was just current equipment.

Yes, a big driving factor in sharding is money saving. People being able to play and anything else is secondary.