There is a new video available, that shows data integration of on-premise data
sources (e.g. databases, files, ERP/CRM or on-premise SharePoint) with Office
365, SharePoint Online or any other hosted or local SharePoint 2010 using native
SharePoint lists as cache and CSOM API to connect.
See more here:
http://www.youtube.com/watch?v=-bN_I8hcZbo
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