What should I look out for in the characteristics of a VPS?

What should I look out for in the characteristics of a VPS?
Who would a VPS be ideal for?
Are dedicated servers scalable?
Are VPSs scalable?

dude i dont get how are these your questions?
are you just trying to learn for an exam or something??
about the use cases of a vps head to this page:
https://windows10vps.blog.se/most-important-windows-vps-use-cases/
you may also read this other article:

For further understanding take real quick look on YouTube