Create an Office 365 API for management of Exchange
As best I can tell, Office 365 doesn't have a way to manage users / mailboxes directly via some kind of web service.
This is extremely problematic when trying to integrate the system into existing account management procedures, which might well not be running on Windows.
Request grouped under investigation OFFICE 365 API ENHANCEMENTS. Investigation currently in progress with expected internal report-out date of 8/1. Public updates to follow soon after the internal review, exact date tbd.