Deploying
When your website's content is ready to be on the internet, it can be deployed.
Preview
info
The preview is intended to be used in the acceptance phase, in order to give a preview of the website to a client before the website goes live.
Therefore, in order for the preview to be updated, you must first publish the website.
Publishing
If a domain is coupled, then the website will be published and the changes should be visible as soon as publishing completes. Otherwise, the published changes are visible in the Preview link.