Commenters can see and directly comment on records in a workspace or base, but cannot modify any of the records, fields, tables, or collaborative views. They can also make personal views for themselves (if they’re part of a Pro plan workspace).
This is a feature only available on Pro and Enterprise plans. You can choose restrict access to a base or view share link to an email domain. If you do this, anyone that wants to view the contents of your share link will need both the randomly generated URL and to be logged into an Airtable account using a verified email address from the specified email domain.