Hi, currently only Windows Server is supported in Windows Azure. You have to buy a MacBook or iMac yourself, or find a third party that offers remote Mac machines.
In addition, it is recommended to do development locally. Even if you have a remote machine, you will encounter some issues. For example, you will have a difficult time to deploy the project to a real iPhone device. And due to lacking of hardware
accellaration in most remote desktop solutions, the emulator may run very slowly.