Share site with all users from Direct Connect domain

[Jorge Carvalho]

Hi,

Scenario:

Establishing a SharePoint Online site, that is meant to be accessible to all users from 2 organisations that are embarking on a close partnership.

Azure AD Direct connect has already been configured between the 2 tenants.

Is there any way to share the site with Everyone from “the other” org, without having to create user objects for all Guests?

[#2]

You should look up the newly added preview feature cross-tenant sync!

https://learn.microsoft.com/en-us/azure/active-directory/multi-tenant-organizations/cross-tenant-syn...