Hello Team ,
we are currently using office365 with version of Azure AD that comes it with for user sync with AD connect . As we intent to use Google Cloud we would like to federate Google Cloud Identity with Azure AD like this - https://cloud.google.com/architecture/identity/federating-gcp-with-azure-active-directory for user mgmt , SSO and MFA . We have installed Google Cloud / G Suite Connector by Microsoft but the user assigment per groups requires premium licenses at least p2 : 
The question now is : i.e i have 150 users currently using office 365 and are being synced with Azure AD for that purposes , but for the Google cloud connector i actually need only 10 to 20 groups and around 50 users to be able to use it . When buying premium licenses do i need to buy licenses for all 150 users or only for the 50 that are going to be used in the google cloud connector. And one more question if i sync only groups in the Google cloud connector , does the users inside those groups need to have as well premium licenses assigned ?
Thank you in advance