Merry Christmas, Brendan!
From Adam. Scroll down to see details.
The Domain
The first part is the domain brendansai.ch. You can create an account with any .CH-supporting registrar (namecheap), and I will transfer the domain to your account.
The Site
This is a static site being hosted by GitHub Pages. I will transfer the repo for this site to you as well. The site will automatically rebuild and deploy each time you commit changes to the main branch. GitHub Pages can serve any static content, so anything you can do with HTML, CSS and JavaScript will work.
Other Options
Since you own the domain, you have full control over its DNS settings. That means you can configure this domain and all its subdomains to point wherever you want when they are entered as a URL. They can point to other web servers, (either by domain name or IP address), email servers, or any other server on the internet.