One of our companies want to change their Company Name. Our current Office 365 exists with multiple Federated domains. We use Azure Connect to sync changes from Onprem AD to Office 365. Our Primary domain is onmicrosoft.com because we have a about 30 Operating Company's. main domains for those company's are federated.
The New domain is is configured as Managed domain and i want to convert it to a federated domain. After some research i saw that i need to execute this command on the ADFS Server:
Convert-MsolDomainToFederated -DomainName domain.com -SupportMultipleDomain
Is the SupportMultipleDomain Switch really required ? I don't want to make this my primary domain.
Is this the only thing i need to do for converting it into the een federated domain ?
Do I need to add this domain or Refresh AD Connect to include this new domain ?
Any help is much appreciated!