So to begin This site runs on Gitlab Pages or that was the case until now
Why change it? Gitlab Pages is impressive, they give you for free a place to run your SSG site without problems but all infrastructure fails sometimes gitlab others GCP infrastructure changes I have to say for the last past 2 years only 5 times the site was down!? I don’t remember exactly, and in most of the case the site was down only a couple of minutes Here is more information about all issues on gitlab pages if you want to trace them