ubuntu cloud server

[DavidZNoble]

Hi everyone!!!
Im building a cloud server. What I was wanting to know is which programs should I run for the following uses.

simultaneously sync quickbooks and snap scheduling

Thats it haha....
Example. while someone is using the main file someone else outside of the shop can also use the file and make changes to it, while it syncs back to the same original file.

Thanks in advance everyone!

[bubylou]

Could you just simply host the files on the server and give them access. I don't know how well syncing files would go as i have never messed with it. Also how often would they need to be synced. From where is the file coming from and where is it being synced to?