Yes! With Air’s free plan , you can create share links to individual assets/files or entire boards. You can also create a Showcase for a selected set of items across your workspace. A Showcase does not change your workspace’s board structure.
There is no limit to how many visitors can access a shared public URL for a share link or Showcase. Anyone you share a public Showcase link with can view it, regardless of workspace role. Within your workspace, a Showcase is visible only to its creator, Workspace Admins, and Workspace Owners on Enterprise.