Migrate Fileshare to SharePoint Online - site structure

This is how I’ve done it.

I break things up into two pieces. Your org intranet and then your Team/ department sites/groups.

The org intranet is open to all as is any site joined to it which consists of the Home page that is a hub site. This has news section etc. for org wide news and news from around the org.

Then I have every department that has org function or wants org facing component have a communication site they own joined to this hub. Each having a location for them to publish news that rolls up to the main hubs “news around the org” section. These sites also act as the “global” network drives for their respective departments / teams etc. where they can openly post documents related to their group.

I then have Microsoft Teams with associated SharePoint sites created for each group which acts as their “private” department / team network drive. They can use teams which most do instead of SharePoint but if they have meta data needs then they will create another library for that purpose. Some private teams even join the hub as well since they are trimmed the news for their departments can also roll up to the home intranet page as well however we do not add these sites to global nav. The rule here is only sites that the org has access to can be used on global nav to not have bad experience for those clicking sites and getting denied.