Hosting the program in the cloud and putting your data in the cloud are two different items. Besides Intuit, there are a handful of vendors who will host the software on their servers, accessed by you. So not technically cloud-based but remote login in. The problem I've had with that is all the data is on their servers and not in my office. I personally will not accept that for security purposes as well as having no backup.

We were originally told that data such as QuickBooks, ProSeries, etc. can be backed up to the cloud (Dropbox, Carbonite, OneDrive, etc.) but since it's an open database type of file (different than Word, Excel, etc. type of files) it should not be used while in the cloud as errors could / have occur(ed). This may have changed as technology has changed but I am not risking it. That's your decision. If you find out "definitively" from ProSeries that it is okay to do so, please update your posting to let us all know.