While that combination might be possible via on-prem servers, as a practical matter it's unlikely a business would make the necessary upgrades without considerable delay.
"We'll ship Groups in our server technology, but the magic of groups and when it becomes most useful for the businesses is when you have that across [all the communication servers] you're using," White says.
"For an on-premises customer that would mean I'm ready to sit down and say I'm ready to upgrade my Exchange Server, my SharePoint Server, my Lync Server and my Office Client right now, at the same time or really close to it, to get that holistic Groups experience everywhere I go. Yes, it's possible but I don't know many customers who do that.
"So you're going to see things light up in these horizontal ways in Office 365 that is just different than how people do things on premises," White says.
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