Organizations are teams or workspaces you can have in Whiteboards that allow you to collaborate with others. Apart from external guests, people have to be added to your organization to access your boards.
One person can be a member of multiple organizations. Use organizations to divide the work between different projects or companies you’re involved with.
In each organization you can have:
team boards visible to all users of that organization,
private boards only visible to you,
boards shared only with specific people.