My Joomla! CMS administration dashboard notifies me when an update to an extension is available.
I then use the 'one-click' update and that extension gets updated.
How do these 'one-click' updates work?
Does Joomla! have a 'central database' of extension versions that the Joomla! CMS checks against? (i.e. a centralized system that keeps track).
Or does each extension provider run their own 'update servers' which the Joomla! CMS checks against?
What's happening 'behind the scenes' to make 'one-click' updates work?