B2B - bulk invite automation + Apps

[Taen keren]

Use Case 

30 Apps is registered in AAD Tenant 1. 

How can I - with least effort, and with least privileged access, automate the bulk invite B2B users from another Tenant to access these Apps?    

So Contoso users get access to the Fabrikams 30 apps?  

[#2]

Hi, from your description I suggest entitlement management (access packages).

https://docs.microsoft.com/en-us/azure/active-directory/governance/entitlement-management-overview