This website https:/abh.ai has been hosted on almost all of the major players in the cloud hosting business. I started out with Scaleway around 7 years ago when they were providing these small ARM options with 20GB SSD. It was the cheapest solution back then costing less than 5€. But that doesn't mean it wasn't a good solution. It was excellent! It was fast and reliable. But because it was ARM and at the time a 32-bit processor, many things like docker could not be properly installed. This is why I decided to look for alternatives, which eventually brought me back to Scaleway!
Upgrading a Drupal 8 site to Drupal 9. Follow the blog written by Dries on Drupal.org: https://www.drupal.org/docs/upgrading-drupal/upgrading-from-drupal-8-to-drupal-9-or-higher to easily upgrade.