We currently federate our Azure AD through Okta.
We do not have on-prem AD.
Due to to the fact that the manager field in M365 or AzureAD can only be update through on-prem AD when synced, and Okta effectively plays that role, we are unable to use the manager field in M365 or Azure AD across all services. The Okta field also doesn't populate through to Azure AD/M365.
Please can this be changed as more and more businesses only deploys Azure AD with fed services.