Will I be able to relink the domain so that the Shared Hosting domain becomes a VPS domain?

Question

Network administration

I have a website that I want to migrate from Shared Hosting to VPS DigitalOcean.
Interested in:
1) can I relink the domain so that the Shared Hosting domain becomes a VPS domain (or will I have to buy another domain)?
2) I also have an SSL certificate purchased, can I also transfer it, or will I have to buy a separate one for VPS?

Answer 1

domain yes
certificate, if for a domain, also yes, if all sorts of letsencrypts - then regenerate