Generally, Confluence instances are restricted to company employees. However, there are pages or documents that need to be shared with customers, suppliers or anonymous users in the corporate website.
To solve this situation, those pages are usually exported (as pdf, html or word doc) to be sent by email or duplicated to be publicly shared, time and again whenever there is a new version. And the same happens for files and attachments.
Share It allows users to easily share Pages and Attachments with non-Confluence users, even outside of your organization.
See how you can Get Started With Share It