Forum Discussion
Company Intranet
Content:
What kind of updates are you guys thinking of ? News?
If this is the case I would recommend you to look into Viva Amplify, with this you can manage news and content from a single point.
As for architecture:
So the structure is you create four Communication sites which you enable to be Hubsites.
One for each company and connect everything relevant to these sites, here recommend using Nested Hubsites for departments etc under each company.
This way you can have each company own branding which will follow each hubsites all the way down.
I Also recommend creating Site templates in SharePoint for each department and audiance target those templates. This way you can have them automatically connected to a hub, have branding following with etc.