High sustained use with little variance in resource demand (easy for HPC, storage-centric services). No need for geo-distribution (orbackblaze) big enough you'

High sustained use with little variance in resource demand (easy for HPC, storage-centric services). No need for geo-distribution (orbackblaze) big enough you'd need multiple data centers anyway (dropbox). For specialized uses, big enough to design and manufacture specialized cases up through motherboards (dropbox, backblaze).