Wikibase.cloud is a cloud-based platform provided by Wikimedia Deutschland that hosts instances of Wikibase. It's currently an invite-only beta service with invites regularly being sent out to those who sign up for early access. If you're interested in receiving an invitation, you can fill out this application.
How to activate your account.
How to create a wiki.
Wikibase.cloud settings for each Wikibase, explained.
Some introductory concepts for those who may never have modeled data before.
Definitions and links to shed light on some commonly used terms.
All about the imprint information your Wikibase needs.
Take a look at Qichwabase, a great example of how to use Wikibase.cloud for language preservation needs.
In June-July 2022 the National Library of the Netherlands (KB) created and configured a test instance on Wikibase.cloud. Much of the setup process was as one would expect when working with empty MediaWiki instances or with Wikidata. However, they found some steps not immediately logical, manifest, clearly documented or within their knowledge and experience at the time. In their presentation (PDF), they share their experiences and first impressions of unboxing, setting up, configuring and tweaking their test instance, and they present solutions for most of the issues they encountered.