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Collaboration Data Objects
abbr., file.ext.	CDO (Microsoft)
comp., net., abbr.	CDO
IT, abbr.	CDO (WSH, MS)
Collaboration Data Objects An application programming interface (API) that allows users and applications high-level access to data objects in Exchange. CDO defines the concept of different object classes, including messages, posts, appointments, and tasks
abbr., comp., MS	CDO (Collaboration Data Objects)

collaboration: 2 phrases in 2 subjects

Abbreviation	1
Software	1