I'm looking at moving from Lotus Notes/Domino to Office365 for email/calendar/contacts. I have a full test environment up and running and could migrate overnight at very little notice except for the fact that in Notes we have server agents that run through our company contacts database and copies/updates contacts that people subscribe to into their individual contacts databases (in olde-Notes parlance, personal name and address books).
The main purpose of this is to push the up to date contacts to the company iPhones (via ActiveSync/IBM Traveler).
I am struggling to find a way to do this in Office 365. I can populate the GAL but am not sure that's the best place for 25000 contacts and it doesn't seem to get synced to iOS devices anyway, just made available to search (so phone numbers aren't natively in the iPhone for people, so only...