AFAIK, there are legacy versions of a "networked" quickbooks that can be hosted by third parties. Not really sure though. Some are doing app streaming of desktop quickbooks
I wouldn’t call the networked versions of quickbooks legacy. (Quickbooks Desktop and it’s ancillary products) That’s like saying Excel is legacy because Office 365 will let you edit spreadsheets in the cloud. Sometimes local operations are just better, or cloud versions don’t fully match features.