We are moving parts of our intranet to SharePoint Online and need to allow access to it by some partners who we aren't covering with full E3 licenses. These users are currently managed in AD with usernames and passwords. We've been told that in SPO, they will need to be invited as external users.
Is there a way to automate the process of inviting them?
All we've found so far is manually inviting a limited number (10) at a time. We sometimes need to do 500 at once.