Access Tokens for External users in Office 365

Question

If one of our SharePoint online Sites has been shared with a external user using his LiveID (Microsoft Account like hotmail).

Does this external user can be authenticated by our Azure AD to be able to call applications using OAuth? Does this user get a valid access token by our Azure AD?

Answer 1

Yes, it is able for guest users to consent to applications, granting them the same access that members have in your directory.

More detail about guest user management and limitations you can refer here .