Have a simple confluence page with an Excel attachment.
Using attachment control on the page so it will have version control on it.
But it seems to not handle concurrency issu.
Example scenario
3 People (1,2,3) open same version at the same time (version 3).
Person 1 saving
Person 2 saving
Person 3 saving
so now the latest version is 6.
But that version has no information from version 4 or 5 !
We are using Attlassian Companion for edit excel on desktop