Change the root site collection of your tenant to modern SharePoint
Back in February this year I posted an article explaining how you can transform and modify a classic root site collection on SharePoint Online to look like a modern communication site.
This is by far the most viewed article on my blog this year with more that 10k visits, meaning that there are a lot of SharePoint admins trying hard to get a consistent modern experience on their intranets.
With the latest version of the SharePoint Online Management Shell a new command was introduced to swap SharePoint sites and it can be used to define a modern site collection as the root site of your tenat.