The announcement of the Army going to a Microsoft Exchange cloud email service is three months old. However, the process already has started and should be complete by the end of the year. That's pretty amazing since they will have to convert over a million accounts. Army expects to save $100 million a year.
Why so fast? I think the Army is also using this as opportunity to get its security house in order. Its debatable that the cloud creates a new vulnerability (consolidation in the cloud reduces redundancy), but the current system was certainly rife with challenges. According to Nations Journal the fact that Outlook stores messages files that creates a challenge for security managers:
"All any analyst has to do is to download a PST file with the cables, unpack them, SNAP them up or down to a computer that is capable of interacting with a thumb drive or a burnable CD, and then erase the server logs that would have provided investigators with a road map of the analyst's activities."
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