It's the big brother of a VPS.
a VPS (Virtual Private Server) is a smaller slice allocated from a *Dedicated Server*
A dedicated server is essentially a bare metal computer, usually with enterprise level hardware for greater reliability / redundancy that sits in a temperature, humidity and...
I would personally suggest you upload content/assets (e.g. videos, images, etc) to a Storage CDN such as Azure Blob Storage, Amazon S3 etc. You will get geo redundant storage for failover, while leverging their large Infrastructure to ensure fast playback while not impacting the server load /...
SolusVM *was* the front runner for a while, years back but I personally feel they've been slipping / not keeping up recently. as others have said, Virtualizor definitely has the edge these days especially for the price you're paying.
Agree with @HalfEatenPie VirtFusion looks very sleek.