Windows powershell for windows phone
WindowsPhone Powershell A2Z or Windows Powershell Mini.
Should be able to manage any Azure based service or any other windows service from anywhere safely. this include office 365, Exchange Online and Azure. This also can be used for private cloud and on-premise; if there's powershell Remoting this should fit in comfortably. The bigger the phone the better.
This should use the same technology used in powershell remoting (using the concept XML files to pass commacnds or this could use a new approach of pushing "PS commands" to a processing agent on Azure or Office 365 to the target system anywhere on Azure, Office 365, private cloud and on-premise). All dependencies are already met by the agent on Azure, Office 365 and the above stated.