... anyone think you could use SharePoint Online with ArcGIS Online. Connecting the two via ArcGIS for SharePoint?
Daniel,
This capability is expected later this month with the 4.1 release of Esri Maps for SharePoint. Keep your eyes posted for the announcement!
-Tripp
Esri HHS Account Manager
Looks like this is available now.
Yes, however I there were some bugs with 4.0, and since 4.1 is expected later this month, it's advisable to wait for it.