How can I share a space externally to users who have Confluence accounts under their own enterprise?

[Lauren O'Donnell]

We're trying to share a space externally with a sister company of ours, and found out that they, too, have Confluence (just not accounts that fall under my company's enterprise level account). Is there any way to add them outside of creating separate accounts for them to have under my company's enterprise group, or sharing with them as "Anonymous" users?

[Mirek]

You can probably export entire space to PDF (or something that you want to share) and send to your sister. That is a low level solution. In other way sister need to have and account in your instance that will allow access to your company resources or Anonymous access but this is what you already know and mentioned :)