How to restore the website completely from scratch?

Hi there,

We are just considering our backup and restore options in the worst case scenario of our wordpress server and installation going down. My question is what would be the process to restore our site if this did happen? Would it be a case of uploading our files again to a new installation of wordpress or is there are plugin that does this for us?

We are currently using the plugin Updraftplus to backup the site:https://updraftplus.com/ and will also ask on their forum but essentially we want to know what we would do in a disaster scenario where we lost everything.

Many thanks in advance