Yes, you can now use a custom domain for your CMS. It's easy to set up. Just configure the CNAME DNS record on the Cloud Settings page, and your application will be accessible through your custom domain, instantly. Learn more about Strapi Cloud Custom Domain in our documentation.
If you are using Strapi Cloud with Custom Domains, you may already have a Certificate Authority Authorization DNS record (CAA Record) configured on your top level domain.
If this is the case you will need to add two additional values to this record or additional CAA records to ensure that Strapi Cloud can properly issue SSL certificates on your behalf for your Strapi Cloud Project. Read our full guide here.