In the Publitas app each publication either has the status Online or Offline.
Using the toggle next to the preview image you can change the status of the publication.
When a publication is Offline it is only viewable when you are logged in to your Publitas account.
Unless someone is logged into your publitas account, they will not be able to access your publication.
When a publication is Online your publication is accessible by anyone with a link to it.
People can access your publication via the link you find within Share.
Embed publications on your website using the embed code found in the Share option.
If you have not disabled SEO, your online publications can also be indexed by search engines